Hi. We are having some minor problems after migration.
We have migrated from OTRS to OTOBO 10.1.5
Agent part seems OK, but customer part gets error on first time login.:
Error persist until picture of checkmark is pressed (see piccture bellow).
After that customer can use portal normaly.

Is there some kind of configuration step after migration that I am missing?

Error message:

Backend ERROR: OTOBO-CGI-10 Perl: 5.34.1
Message: Failed to load Content!

RemoteAddress:
RequestURI: /otobo/customer.pl?Action=CustomerGenericContent&Subaction=Show&Key=Accept

Traceback (18):
Module: Kernel::Modules::CustomerGenericContent::Run Line: 119
Module: Kernel::System::Web::InterfaceCustomer::Content Line: 1408
Module: Kernel::System::Web::InterfaceCustomer::Response Line: 1490
Module: Kernel::System::Web::App::call Line: 86
Module: Plack::Component::__ANON__ Line: 50
Module: Plack::Sandbox::_2fopt_2fotobo_2fbin_2fpsgi_2dbin_2fotobo_2epsgi::__ANON__ Line: 476
Module: Plack::App::URLMap::call Line: 71
Module: Plack::Component::__ANON__ Line: 50
Module: Plack::Sandbox::_2fopt_2fotobo_2fbin_2fpsgi_2dbin_2fotobo_2epsgi::__ANON__ Line: 200
Module: Plack::Sandbox::_2fopt_2fotobo_2fbin_2fpsgi_2dbin_2fotobo_2epsgi::__ANON__ Line: 170
Module: Plack::Sandbox::_2fopt_2fotobo_2fbin_2fpsgi_2dbin_2fotobo_2epsgi::__ANON__ Line: 156
Module: Plack::Middleware::HTTPExceptions::try {…} Line: 20

Error screen: