Sidekick suddenly starts crashing

I had a helm installation of gitlab runnig for several weeks. Chart release version 4.6.1
Suddenly its not working anymore. I can see that the sidekick pod is crashing. I saw some other error message in this forum that this would be because the smtp-password was not coded in UTF-8, but I only have normal ascii-7 bits password, still I get the below. Any ideas?

Log from the sidekick:

invalid byte sequence in UTF-8
/srv/gitlab/config/initializers/smtp_settings.rb:12:in strip' /srv/gitlab/config/initializers/smtp_settings.rb:12:in
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:55:in load' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:55:in load’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3.3/lib/active_support/dependencies.rb:318:in block in load' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3.3/lib/active_support/dependencies.rb:291:in load_dependency’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3.3/lib/active_support/dependencies.rb:318:in load' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/engine.rb:666:in block in load_config_initializer’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3.3/lib/active_support/notifications.rb:182:in instrument' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/engine.rb:665:in load_config_initializer’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/engine.rb:625:in block (2 levels) in <class:Engine>' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/engine.rb:624:in each’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/engine.rb:624:in block in <class:Engine>' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/initializable.rb:32:in instance_exec’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/initializable.rb:32:in run' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/initializable.rb:61:in block in run_initializers’
/usr/lib/ruby/2.7.0/tsort.rb:228:in block in tsort_each' /usr/lib/ruby/2.7.0/tsort.rb:350:in block (2 levels) in each_strongly_connected_component’
/usr/lib/ruby/2.7.0/tsort.rb:422:in block (2 levels) in each_strongly_connected_component_from' /usr/lib/ruby/2.7.0/tsort.rb:431:in each_strongly_connected_component_from’
/usr/lib/ruby/2.7.0/tsort.rb:421:in block in each_strongly_connected_component_from' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/initializable.rb:50:in each’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/initializable.rb:50:in tsort_each_child' /usr/lib/ruby/2.7.0/tsort.rb:415:in call’
/usr/lib/ruby/2.7.0/tsort.rb:415:in each_strongly_connected_component_from' /usr/lib/ruby/2.7.0/tsort.rb:349:in block in each_strongly_connected_component’
/usr/lib/ruby/2.7.0/tsort.rb:347:in each' /usr/lib/ruby/2.7.0/tsort.rb:347:in call’
/usr/lib/ruby/2.7.0/tsort.rb:347:in each_strongly_connected_component' /usr/lib/ruby/2.7.0/tsort.rb:226:in tsort_each’
/usr/lib/ruby/2.7.0/tsort.rb:205:in tsort_each' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/initializable.rb:60:in run_initializers’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3.3/lib/rails/application.rb:363:in initialize!' /srv/gitlab/config/environment.rb:5:in <top (required)>’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3.3/lib/active_support/dependencies.rb:324:in require' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3.3/lib/active_support/dependencies.rb:324:in block in require’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3.3/lib/active_support/dependencies.rb:291:in load_dependency' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3.3/lib/active_support/dependencies.rb:324:in require’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.9/lib/sidekiq/cli.rb:288:in boot_system' /srv/gitlab/vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.9/lib/sidekiq/cli.rb:46:in run’
/srv/gitlab/vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.9/bin/sidekiq:12:in <top (required)>' /srv/gitlab/vendor/bundle/ruby/2.7.0/bin/sidekiq:23:in load’
/srv/gitlab/vendor/bundle/ruby/2.7.0/bin/sidekiq:23:in <top (required)>' /usr/lib/ruby/2.7.0/bundler/cli/exec.rb:63:in load’
/usr/lib/ruby/2.7.0/bundler/cli/exec.rb:63:in kernel_load' /usr/lib/ruby/2.7.0/bundler/cli/exec.rb:28:in run’
/usr/lib/ruby/2.7.0/bundler/cli.rb:476:in exec' /usr/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor/command.rb:27:in run’
/usr/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor/invocation.rb:127:in invoke_command' /usr/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor.rb:399:in dispatch’
/usr/lib/ruby/2.7.0/bundler/cli.rb:30:in dispatch' /usr/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor/base.rb:476:in start’
/usr/lib/ruby/2.7.0/bundler/cli.rb:24:in start' /usr/lib/ruby/gems/2.7.0/gems/bundler-2.1.4/libexec/bundle:46:in block in <top (required)>’
/usr/lib/ruby/2.7.0/bundler/friendly_errors.rb:123:in with_friendly_errors' /usr/lib/ruby/gems/2.7.0/gems/bundler-2.1.4/libexec/bundle:34:in <top (required)>’
/srv/gitlab/bin/bundle:3:in load' /srv/gitlab/bin/bundle:3:in

Thanks for taking the time to be thorough in your request, it really helps! :blush: