Asking about the fact that the report of Piwik 2.1.0.0 is not displayed properly

Currently using Piwik 2.15.0,
An overview has occurred that the result of the report at the bottom of the screen is not displayed properly.
Specifically, you can display reports normally on a daily basis, but if you specify a period of one month like From: 10/1, To: 10/31 by period designation, all reports are 0 .

In addition, the following is executed by cron in order to reduce the processing load of Piwik.
5 * * * * root /usr/bin/php56 /data/www/piwik/htdocs/console core:archive --url=[Address of piwik management page] > /var/log/piwik-archive.log

If you look at the generated piwik-archive.log, an error is output as shown at the bottom of the mail.

I upgraded it to Piwik 2.16.2 as it is, but for now, I do not get an error of archive cron and the report looks normal.

Would you please reply on the following?
・Cause the report can not be displayed correctly
・Cause the archive cron to fail
・Measures to prevent reoccurrence of each of the above two points

—Contents of piwik-archive.log—
INFO [2016-11-08 04:05:01] ---------------------------
INFO [2016-11-08 04:05:01] INIT
INFO [2016-11-08 04:05:01] Running Piwik 2.15.0 as Super User
INFO [2016-11-08 04:05:01] ---------------------------
INFO [2016-11-08 04:05:01] NOTES
INFO [2016-11-08 04:05:01] - If you execute this script at least once per hour (or more often) in a crontab, you may disable ‘Browser trigger archiving’ in Piwik UI > Settings > General Settings.
INFO [2016-11-08 04:05:01] See the doc at: How to Set up Auto-Archiving of Your Reports - Analytics Platform - Matomo
INFO [2016-11-08 04:05:01] - Reports for today will be processed at most every 3600 seconds. You can change this value in Piwik UI > Settings > General Settings.
INFO [2016-11-08 04:05:01] - Reports for the current week/month/year will be refreshed at most every 3600 seconds.
INFO [2016-11-08 04:05:01] - Archiving was last executed without error 6 days 5 hours ago
INFO [2016-11-08 04:05:01] - Will process 2 other websites because some old data reports have been invalidated (eg. using the Log Import script) , IDs: 1, 2
INFO [2016-11-08 04:05:01] ---------------------------
INFO [2016-11-08 04:05:01] START
INFO [2016-11-08 04:05:01] Starting Piwik reports archiving…
INFO [2016-11-08 04:05:01] Old report was invalidated for website id 1
INFO [2016-11-08 04:05:01] Will pre-process for website id = 1, period = day, date = last52
INFO [2016-11-08 04:05:01] - pre-processing all visits
INFO [2016-11-08 04:05:03] Old report was invalidated for website id 2
INFO [2016-11-08 04:05:03] Will pre-process for website id = 2, period = day, date = last52
INFO [2016-11-08 04:05:03] - pre-processing all visits
INFO [2016-11-08 04:05:03] Done archiving!
INFO [2016-11-08 04:05:03] ---------------------------
INFO [2016-11-08 04:05:03] SUMMARY
INFO [2016-11-08 04:05:03] Total visits for today across archived websites: 0
INFO [2016-11-08 04:05:03] Archived today’s reports for 0 websites
INFO [2016-11-08 04:05:03] Archived week/month/year for 0 websites
INFO [2016-11-08 04:05:03] Skipped 2 websites
INFO [2016-11-08 04:05:03] - 0 skipped because no new visit since the last script execution
INFO [2016-11-08 04:05:01] ---------------------------
INFO [2016-11-08 04:05:01] INIT
INFO [2016-11-08 04:05:01] Running Piwik 2.15.0 as Super User
INFO [2016-11-08 04:05:01] ---------------------------
INFO [2016-11-08 04:05:01] NOTES
INFO [2016-11-08 04:05:01] - If you execute this script at least once per hour (or more often) in a crontab, you may disable ‘Browser trigger archiving’ in Piwik UI > Settin
gs > General Settings.
INFO [2016-11-08 04:05:01] See the doc at: How to Set up Auto-Archiving of Your Reports - Analytics Platform - Matomo
INFO [2016-11-08 04:05:01] - Reports for today will be processed at most every 3600 seconds. You can change this value in Piwik UI > Settings > General Settings.
INFO [2016-11-08 04:05:01] - Reports for the current week/month/year will be refreshed at most every 3600 seconds.
INFO [2016-11-08 04:05:01] - Archiving was last executed without error 6 days 5 hours ago
INFO [2016-11-08 04:05:01] - Will process 2 other websites because some old data reports have been invalidated (eg. using the Log Import script) , IDs: 1, 2
INFO [2016-11-08 04:05:01] ---------------------------
INFO [2016-11-08 04:05:01] START
INFO [2016-11-08 04:05:01] Starting Piwik reports archiving…
INFO [2016-11-08 04:05:01] Old report was invalidated for website id 1
INFO [2016-11-08 04:05:01] Will pre-process for website id = 1, period = day, date = last52
INFO [2016-11-08 04:05:01] - pre-processing all visits
INFO [2016-11-08 04:05:03] Old report was invalidated for website id 2
INFO [2016-11-08 04:05:03] Will pre-process for website id = 2, period = day, date = last52
INFO [2016-11-08 04:05:03] - pre-processing all visits
INFO [2016-11-08 04:05:03] Done archiving!
INFO [2016-11-08 04:05:03] ---------------------------
INFO [2016-11-08 04:05:03] SUMMARY
INFO [2016-11-08 04:05:03] Total visits for today across archived websites: 0
INFO [2016-11-08 04:05:03] Archived today’s reports for 0 websites
INFO [2016-11-08 04:05:03] Archived week/month/year for 0 websites
INFO [2016-11-08 04:05:03] Skipped 2 websites
INFO [2016-11-08 04:05:03] - 0 skipped because no new visit since the last script execution
INFO [2016-11-08 04:05:03] - 0 skipped because existing daily reports are less than 3600 seconds old
INFO [2016-11-08 04:05:03] - 0 skipped because existing week/month/year periods reports are less than 3600 seconds old
INFO [2016-11-08 04:05:03] - 2 skipped because got an error while querying reporting API
INFO [2016-11-08 04:05:03] Total API requests: 0
INFO [2016-11-08 04:05:03] done: 0/2 0%, 0 vtoday, 0 wtoday, 0 wperiods, 0 req, 2074 ms, 2 errors.
INFO [2016-11-08 04:05:03] Time elapsed: 2.074s
INFO [2016-11-08 04:05:03] ---------------------------
INFO [2016-11-08 04:05:03] SCHEDULED TASKS
INFO [2016-11-08 04:05:03] Starting Scheduled tasks…
INFO [2016-11-08 04:05:04] Scheduler: executing task Piwik\Plugins\ExamplePlugin\Tasks.myTask…
INFO [2016-11-08 04:05:04] Scheduler: finished. Time elapsed: 0.000s
INFO [2016-11-08 04:05:04] done
INFO [2016-11-08 04:05:04] ---------------------------
INFO [2016-11-08 04:05:04] ---------------------------
INFO [2016-11-08 04:05:04] SUMMARY OF ERRORS
INFO [2016-11-08 04:05:04] Error: Empty or invalid response '[2016-11-08 04:05:02] piwik.DEBUG: Loaded plugins: CorePluginsAdmin, CoreAdminHome, CoreHome, WebsiteMeasurable, Diagnostics, CoreVisualizations, Proxy, API, ExamplePlugin, Widgetize, Transitions, LanguagesManager, Actions, Dashboard, MultiSites, Referrers, UserLanguage, DevicesDetection, Goals, Ecommerce, SEO, Events, UserCountry, VisitsSummary, VisitFrequency, VisitTime, VisitorInterest, ExampleAPI, ExampleRssWidget, Feedback, Monolog, Login, UsersManager, SitesManager, Installation, CoreUpdater, CoreConsole, ScheduledReports, UserCountryMap, Live, CustomVariables, PrivacyManager, ImageGraph, Annotations, MobileMessaging, Overlay, SegmentEditor, Insights, Morpheus, Contents, BulkTracking, Resolution, DevicePlugins, Heartbeat, Intl [] {“class”:“Piwik\Plugin\Manager”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Initializing archiving process for all plugins [visits = 3, visits converted = 0] [“callAggregateAllPlugins”,“3”,“0”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘ExamplePlugin’. [“callAggregateAllPlugins”,“ExamplePlugin”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘Actions’. [“callAggregateAllPlugins”,“Actions”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘Referrers’. [“callAggregateAllPlugins”,“Referrers”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘UserLanguage’. [“callAggregateAllPlugins”,“UserLanguage”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘DevicesDetection’. [“callAggregateAllPlugins”,“DevicesDetection”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘Goals’. [“callAggregateAllPlugins”,“Goals”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘Events’. [“callAggregateAllPlugins”,“Events”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘UserCountry’. [“callAggregateAllPlugins”,“UserCountry”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘VisitTime’. [“callAggregateAllPlugins”,“VisitTime”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘VisitorInterest’. [“callAggregateAllPlugins”,“VisitorInterest”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘CustomVariables’. [“callAggregateAllPlugins”,“CustomVariables”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘Contents’. [“callAggregateAllPlugins”,“Contents”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘Resolution’. [“callAggregateAllPlugins”,“Resolution”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘DevicePlugins’. [“callAggregateAllPlugins”,“DevicePlugins”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: day archive, idSite = 1 (temporary archive), segment ‘visitorType==returning,visitorType==returningCustomer’, report = ‘VisitsSummary’, UTC datetime [2016-11-07 15:00:00 -> 2016-11-08 14:59:59] [“day”,1,“temporary archive”,“visitorType==returning,visitorType==returningCustomer”,“VisitsSummary”,“2016-11-07 15:00:00”,“2016-11-08 14:59:59”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Initializing archiving process for all plugins [visits = 3, visits converted = 0] [“callAggregateAllPlugins”,3,0] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘ExamplePlugin’. [“callAggregateAllPlugins”,“ExamplePlugin”] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin 'Action
AggregateAllPlugins",“CustomVariables”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plug
in ‘Contents’. [“callAggregateAllPlugins”,“Contents”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving re
ports for plugin ‘Resolution’. [“callAggregateAllPlugins”,“Resolution”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins
: Not archiving reports for plugin ‘DevicePlugins’. [“callAggregateAllPlugins”,“DevicePlugins”] {“class”:“VisitsSummary”} [2016-11-08 04:05:02] piwik.DEBUG: day archive, idS
ite = 1 (temporary archive), segment ‘visitorType==returning,visitorType==returningCustomer’, report = ‘VisitsSummary’, UTC datetime [2016-11-07 15:00:00 -> 2016-11-08 14:59
:59] [“day”,1,“temporary archive”,“visitorType==returning,visitorType==returningCustomer”,“VisitsSummary”,“2016-11-07 15:00:00”,“2016-11-08 14:59:59”] {“class”:“VisitsSummar
y”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Initializing archiving process for all plugins [visits = 3, visits converted = 0] [“callAggr
egateAllPlugins”,3,0] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘ExamplePlugin’. [“call
AggregateAllPlugins”,“ExamplePlugin”] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘Actions’. [“callAggregateAllPlugins”,“Actions”] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘Referrers’. [“callAggregateAllPlugins”,“Referrers”] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘UserLanguage’. [“callAggregateAllPlugins”,“UserLanguage”] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘DevicesDetection’. [“callAggregateAllPlugins”,“DevicesDetection”] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Archiving day reports for plugin ‘Goals’. [“callAggregateAllPlugins”,“Goals”] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Memory delta: 248.3 K while archiving day reports for plugin ‘Goals’. [“callAggregateAllPlugins”,“Memory delta: 248.3 K”,“day”,“Goals”] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘Events’. [“callAggregateAllPlugins”,“Events”] {“class”:“Goals”} [2016-11-08 04:05:02] piwik.DEBUG: PluginsArchiver::callAggregateAllPlugins: Not archiving reports for plugin ‘UserCountry’. [“callAggregateAllPlugins”,"UserCoun
INFO [2016-11-08 04:05:04] Error: Empty or invalid response '[2016-11-08 04:05:03] piwik.DEBUG: Loaded plugins: CorePluginsAdmin, CoreAdminHome, CoreHome, WebsiteMeasurable, Diagnostics, CoreVisualizations, Proxy, API, ExamplePlugin, Widgetize, Transitions, LanguagesManager, Actions, Dashboard, MultiSites, Referrers, UserLanguage, DevicesDetection, Goals, Ecommerce, SEO, Events, UserCountry, VisitsSummary, VisitFrequency, VisitTime, VisitorInterest, ExampleAPI, ExampleRssWidget, Feedback, Monolog, Login, UsersManager, SitesManager, Installation, CoreUpdater, CoreConsole, ScheduledReports, UserCountryMap, Live, CustomVariables, PrivacyManager, ImageGraph, Annotations, MobileMessaging, Overlay, SegmentEditor, Insights, Morpheus, Contents, BulkTracking, Resolution, DevicePlugins, Heartbeat, Intl [] {“class”:“Piwik\Plugin\Manager”} a:52:{s:10:“2016-09-18”;a:0:{}s:10:“2016-09-19”;a:0:{}s:10:“2016-09-20”;a:0:{}s:10:“2016-09-21”;a:36:{s:16:“nb_uniq_visitors”;d:1;s:9:“nb_visits”;d:1;s:8:“nb_users”;i:0;s:10:“nb_actions”;d:40;s:11:“max_actions”;d:40;s:12:“bounce_count”;i:0;s:16:“sum_visit_length”;d:498;s:19:“nb_visits_returning”;d:1;s:20:“nb_actions_returning”;d:40;s:26:“nb_uniq_visitors_returning”;d:1;s:18:“nb_users_returning”;i:0;s:21:“max_actions_returning”;d:40;s:21:“bounce_rate_returning”;s:2:“0%”;s:30:“nb_actions_per_visit_returning”;d:40;s:26:“avg_time_on_site_returning”;d:498;s:14:“nb_conversions”;i:0;s:19:“nb_visits_converted”;i:0;s:7:“revenue”;i:0;s:15:“conversion_rate”;s:2:“0%”;s:30:“nb_conversions_returning_visit”;i:0;s:35:“nb_visits_converted_returning_visit”;i:0;s:23:“revenue_returning_visit”;i:0;s:31:“conversion_rate_returning_visit”;s:2:“0%”;s:12:“nb_pageviews”;d:40;s:17:“nb_uniq_pageviews”;d:1;s:12:“nb_downloads”;i:0;s:17:“nb_uniq_downloads”;i:0;s:11:“nb_outlinks”;i:0;s:16:“nb_uniq_outlinks”;i:0;s:11:“nb_searches”;i:0;s:11:“nb_keywords”;i:0;s:28:“nb_hits_with_time_generation”;d:40;s:19:“avg_time_generation”;d:0.023;s:11:“bounce_rate”;s:2:“0%”;s:20:“nb_actions_per_visit”;d:40;s:16:“avg_time_on_site”;d:498;}s:10:“2016-09-22”;a:0:{}s:10:“2016-09-23”;a:0:{}s:10:“2016-09-24”;a:0:{}s:10:“2016-09-25”;a:0:{}s:10:“2016-09-26”;a:0:{}s:10:“2016-09-27”;a:0:{}s:10:“2016-09-28”;a:0:{}s:10:“2016-09-29”;a:0:{}s:10:“2016-09-30”;a:0:{}s:10:“2016-10-01”;a:0:{}s:10:“2016-10-02”;a:0:{}s:10:“2016-10-03”;a:0:{}s:10:“2016-10-04”;a:36:{s:16:“nb_uniq_visitors”;d:2;s:9:“nb_visits”;d:7;s:8:“nb_users”;i:0;s:10:“nb_actions”;d:109;s:11:“max_actions”;d:28;s:12:“bounce_count”;i:0;s:16:“sum_visit_length”;d:7847;s:19:“nb_visits_returning”;d:7;s:20:“nb_actions_returning”;d:109;s:26:“nb_uniq_visitors_returning”;d:2;s:18:“nb_users_returning”;i:0;s:21:“max_actions_returning”;d:28;s:21:“bounce_rate_returning”;s:2:“0%”;s:30:“nb_actions_per_visit_returning”;d:15.6;s:26:“avg_time_on_site_returning”;d:1121;s:14:“nb_conversions”;i:0;s:19:“nb_visits_converted”;i:0;s:7:“revenue”;i:0;s:15:“conversion_rate”;s:2:“0%”;s:30:“nb_conversions_returning_visit”;i:0;s:35:“nb_visits_converted_returning_visit”;i:0;s:23:“revenue_returning_visit”;i:0;s:31:“conversion_rate_returning_visit”;s:2:“0%”;s:12:“nb_pageviews”;d:109;s:17:“nb_uniq_pageviews”;d:7;s:12:“nb_downloads”;i:0;s:17:“nb_uniq_downloads”;i:0;s:11:“nb_outlinks”;i:0;s:16:“nb_uniq_outlinks”;i:0;s:11:“nb_searches”;i:0;s:11:“nb_keywords”;i:0;s:28:“nb_hits_with_time_generation”;d:107;s:19:“avg_time_generation”;d:0.184;s:11:“bounce_rate”;s:2:“0%”;s:20:“nb_actions_per_visit”;d:15.6;s:16:“avg_time_on_site”;d:1121;}s:10:“2016-10-05”;a:40:{s:16:“nb_uniq_visitors”;d:3;s:9:“nb_visits”;d:6;s:8:“nb_users”;i:0;s:10:“nb_actions”;d:25;s:11:“max_actions”;d:10;s:12:“bounce_count”;d:3;s:16:“sum_visit_length”;d:5335;s:19:“nb_visits_returning”;d:5;s:20:“nb_actions_returning”;d:24;s:26:“nb_uniq_visitors_returning”;d:2;s:18:“nb_users_returning”;i:0;s:21:“max_actions_returning”;d:10;s:21:“bounce_rate_returning”;s:3:“40%”;s:30:“nb_actions_per_visit_returning”;d:4.7999999999999998;s:26:“avg_time_on_site_returning”;d:1067;s:14:“nb_conversions”;i:0;s:19:“nb_visits_converted”;i:0;s:7:“revenue”;i:0;s:15:“conversion_rate”;s:2:“0%”;s:24:“nb_conversions_new_visit”;i:0;s:29:“nb_visits_converted_new_visit”;i:0;s:17:“revenue_new_visit”;i:0;s:25:“conversion_rate_new_visit”;s:2:“0%”;s:30:“nb_conversions_returning_visit”;i:0;s:35:“nb_visits_converted_returning_visit”;i:0;s:23:“revenue_returning_visit”;i:0;s:31:“conversion_rate_returning_visit”;s:2:“0%”;s:12:“nb_pageviews”;d:25;s:17:“nb_uniq_pageviews”;d:7;s:12:“nb_downloads”;i:0;s:17:“nb_uniq_downloads”;i:0;s:11:“nb_outlinks”;i:0;s:16:“nb_uniq_outlinks”;i:0;s:11:“nb_searches”;i:0;s:11:“nb_keywords”;i:0;s:28:“nb_hits_with_time_generation”;d:23;s:19:“avg_time_generation”;d:0.21199999999999999;s:11:“bounce_rate”;s:3:“50%”;s:20:“nb_actions_per_visit”;d:4.2000000000000002;s:16:“avg_time_on_site”;d:889;}s:10:“2016-10-06”;a:40:{s:16:“nb_uniq_visitors”;d:2;s:9:“nb_visits”;d:2;s:8:“nb_users”;i:0;s:10:“nb_actions”;d:2;s:11:“max_actions”;d:1;s:12:“bounce_count”;d:2;s:16:“sum_visit_length”;i:0;s:19:“nb_visits_returning”;d:1;s:20:“nb_actions_returning”;d:1;s:26:“nb_uniq_visitors_returning”;d:1;s:18:“nb_users_returning”;i:0;s:21:“max_actions_returning”;d:1;s:21:“bounce_rate_returning”;s:4:“100%”;s:30:“nb_actions_per_visit_returning”;d:1;s:26:“avg_time_on_site_returning”;d:0;s:14:“nb_conversions”;i:0;s:19:“nb_visits_converted”;i:0;s:7:“revenue”;i:0;s:15:“conversion_rate”;s:2:“0%”;s:24:“nb_conversions_new_visit”;i:0;s:29:“nb_visits_converted_new_visit”;i:0;s:17:“revenue_new_visit”;i:0;s:25:“conversion_rate_new_visit”;s:2:“0%”;s:30:“nb_conversions_returning_visit”;i:0;s:35:“nb_visits_converted_returning_visit”;i:0;s:23:“revenue_returning_visit”;i:0;s:31:“conversion_rate_returning_visit”;s:2:“0%”;s:12:“nb_pageviews”;d:2;s:17:“nb_uniq_pageviews”;d:2;s:12:“nb_downloads”;i:0;s:17:“nb_uniq_downloads”;i:0;s:11:“nb_outlinks”;i:0;s:16:“nb_uniq_outlinks”;i:0;s:11:“nb_searches”;i:0;s:11:“nb_keywords”;i:0;s:28:“nb_hits_with_time_generation”;d:2;s:19:“avg_time_generation”;d:0.13;s:11:“bounce_rate”;s:4:“100%”;s:20:"nb_actions_per_