Error: Missing Kernel::System::Calendar::Plugin::Ticket

[uffIT]

Hello,
After upgrading to 6.3.1 I keep on receiveing errors like this on the system log section:

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function: OTRS-otrs.Console.pl-Maint::Calendar::Ticket::Generate-42
Message: Can't load plugin module Kernel::System::Calendar::Plugin::Ticket! 

function: OTRS-otrs.Console.pl-Maint::Calendar::Ticket::Generate-42

Message: Can't locate Kernel/System/Calendar/Plugin/Ticket.pm in @INC (you may need to install the Kernel::System::Calendar::Plugin::Ticket module) 
(@INC contains: /opt/znuny-6.3.1/Custom /opt/znuny-6.3.1/Kernel/cpan-lib /opt/znuny-6.3.1 /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.30.0 /usr/local/share/perl/5.30.0 
/usr/lib/x86_64-linux-gnu/perl5/5.30 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.30 /usr/share/perl/5.30 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) 
at /opt/znuny-6.3.1/Kernel/System/Main.pm line 86.

As a matter of fact the file is missing from the folder /opt/otrs/Kernel/System/Calendar/Plugin
The file is present in my old folder of the 6.2.2 version.
Is it a bug? Do I need to change something on my installation to get rid of those errors?
I don't have any Calendar set so we don't use any calendar related functions.

Thank you.

Alessio

[root]

Hi,

Have you executed the migration script? Please execute the command:

bin/otrs.Console.pl Maint::Config::Rebuild --cleanup

and check if the problem still exist.

- Roy

[uffIT]

Thank you Roy!
That command fixed the problem!

Many thanks!

[KaiHerlemann]

In our case, the problem still exists (with Znuny 6.3.3).
The settings in the sysconfig "Core::AppointmentCalendar::Plugin" navigation path looks like you can see in the attachment.
Looks for me like this change in one of the .xml files wasn't properly adopted by the migration script.
The "bin/otrs.Console.pl Maint::Config::Rebuild --cleanup" command doesn't help.

If I change the setting

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AppointmentCalendar::Plugin###0100-Ticket

from

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Kernel::System::Calendar::Plugin::Ticket

to

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Kernel::System::Calendar::Plugin::Ticket::Link

, it works. (Also the

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AgentAppointmentCalendarOverview

view works then, as well as

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AgentAppointmentCalendarOverview;Subaction=AppointmentCreate;PluginKey=0100-Ticket;ObjectID=xxxxx

, before I change it manually the browser wants to downloads a empty index.pl file.)
So, I think the reason is clear, but I don't know why the migrations script doesn't properly adopt the changes in the .xml file.

[KaiHerlemann]

Problem is solved.
There was still a file /root/opt/otrs/Kernel/Config/Files/XML/OTRSAppointmentCalendar.xml, which caused the problem.

Thanks to Roy!