Met 500err when click issues

we use gitlab-ee-12.6.3

When click on issues,we got 500 err.
here the related logs

tail -f /var/log/gitlab/gitlab-rails/production.log

OpenSSL::Cipher::CipherError ():

lib/gitlab/crypto_helper.rb:27:in aes256_gcm_decrypt' app/models/concerns/token_authenticatable_strategies/encrypted.rb:45:in get_token’
app/models/concerns/token_authenticatable_strategies/base.rb:33:in ensure_token!' app/models/concerns/token_authenticatable.rb:43:in block in add_authentication_token_field’
app/models/group.rb:435:in runners_token' app/serializers/base_serializer.rb:16:in represent’
app/serializers/issue_serializer.rb:20:in represent' app/controllers/concerns/issuable_actions.rb:32:in block (2 levels) in show’
app/controllers/concerns/issuable_actions.rb:30:in show' ee/lib/gitlab/ip_address_state.rb:10:in with’
ee/app/controllers/ee/application_controller.rb:43:in set_current_ip_address' lib/gitlab/session.rb:11:in with_session’
app/controllers/application_controller.rb:458:in set_session_storage' lib/gitlab/i18n.rb:55:in with_locale’
lib/gitlab/i18n.rb:61:in with_user_locale' app/controllers/application_controller.rb:452:in set_locale’
lib/gitlab/error_tracking.rb:34:in with_context' app/controllers/application_controller.rb:536:in sentry_context’
lib/gitlab/middleware/rails_queue_duration.rb:27:in call' lib/gitlab/metrics/rack_middleware.rb:17:in block in call’
lib/gitlab/metrics/transaction.rb:62:in run' lib/gitlab/metrics/rack_middleware.rb:17:in call’
lib/gitlab/request_profiler/middleware.rb:17:in call' ee/lib/gitlab/jira/middleware.rb:19:in call’
lib/gitlab/middleware/go.rb:20:in call' lib/gitlab/etag_caching/middleware.rb:13:in call’
lib/gitlab/middleware/correlation_id.rb:16:in block in call' lib/gitlab/middleware/correlation_id.rb:15:in call’
lib/gitlab/middleware/multipart.rb:117:in call' lib/gitlab/middleware/read_only/controller.rb:48:in call’
lib/gitlab/middleware/read_only.rb:18:in call' lib/gitlab/middleware/basic_health_check.rb:25:in call’
lib/gitlab/request_context.rb:32:in call' config/initializers/fix_local_cache_middleware.rb:9:in call’
lib/gitlab/metrics/requests_rack_middleware.rb:49:in call' lib/gitlab/middleware/release_env.rb:12:in call’