An error occurred - No entry or class found for 'Piwik\Plugins\Actions\Menu' after upgrading to 3.0

Support & Bugs
1

Hi,
I’ve just updated from 2.16.5 to 3.0.1 and got a warning message without incidence :
You are not allowed to change the value of the setting “enable_plugin_update_communication” in plugin "CoreUpdater"
After my login, I followed the advice from the system check and removed a lot of files.
Then I logged-in again and got this message : An error occurred - No entry or class found for 'Piwik\Plugins\Actions\Menu’
From the apache logs, it could also be : Piwik\Plugins\Referrers\Menu
I unzipped again piwik but the Menu.php files for those 2 folders don’t exist anymore in Piwik 3.0.x. (so only in 2.x).

Do you have any idea how I can get rid of this error ?

For the moment, the workaround is to enable the development mode, that disables the integrity file check (in config/global.ini.php and section [Development]).

Thanks in advance.

2

You can ignore this error for now

3

I am having the same issue. I have updated, removed the suggested files and folders and now I cannot reach my backend. I am getting the error message
An error occurred - No entry or class found for ‘Piwik\Plugins\Actions\Menu’

How can I enable development mode in order to get into the backend?

P.S.: Found the development setting in global.ini.php and can access the backend

Will I now have to run piwik in development mode all the time?

Phew … got it running by downloading a version of piwik 2.17.1 and uploading Menu.php to a bunch of folders that seemed to be missing the file. Now I can access the backend in normal mode again.

P.S.: I like the look of the new backend … thanks for all the work!

4

I just upgraded our test server to 3.0.3 in preparation for upgrading our production server soon and ran in to this problem as well. I removed all files suggested under System Check but then Piwik stops working and as soon as I log in either as a superuser or a regular user I get this error message:

image.png792×451 6.04 KB

After restoring the Menu.php files from the plugins complaining as the above image the system check looks like this:

image.png723×418 11.9 KB

Should I just leave it like this and will the same thing happen when I’m upgrading our production server or could ther be something different with the test installation?

Best regards
Victor

5

One more thing, I found this issue on GitHub suggesting this was fixed, could it matter from which version we upgraded?

6

I’m getting the same thing after an upgrade from 2.17.1 to 3.0.4 and deleting all the recommended files shown in the file integrity check. After reading some of the other posts, I figured out I had to run the console command core:clear-caches after deleting the files and that solved the issue.