Trouble with "check system": Entry Piwik\Plugins\Diagnostics\DiagnosticService cannot be resolved

Hello!
When I click on “check system” I see next messages:

Entry Piwik\Plugins\Diagnostics\DiagnosticService cannot be resolved: The parameter ‘mandatoryDiagnostics’ of Piwik\Plugins\Diagnostics\DiagnosticService::__construct has no value defined or guessableFull definition:Object ( class = Piwik\Plugins\Diagnostics\DiagnosticService scope = singleton lazy = false __construct( $mandatoryDiagnostics = #UNDEFINED# $optionalDiagnostics = #UNDEFINED# $disabledDiagnostics = #UNDEFINED# ))

Please,help me. How can I fix it?
P.S. I use piwik version 2.13.1

Hi there,

Thanks for the report. This is a new bug in Piwik. can you please report this in an issue at: Issues · matomo-org/piwik · GitHub ? we will follow up

Hi Matt,

Is this bug resolved in the new release 2.14? or is your team still working on it?

Thanks,
Dilish

Hi,
this bug should be fixed in 2.14.0

In 2.14.2 I have the same problem:
The parameter ‘mandatoryDiagnostics’ of Piwik\Plugins\Diagnostics\DiagnosticService::__construct has no value defined or guessableFull definition

Detlef

Hi there,

Can you please create a bug report at: Issues · matomo-org/piwik · GitHub - we will investigate