Hello 
Our discourse (2.8.0.beta10) is having issues when users log in with GitHub SSO.
Removing the association doesn’t fix the problem, and we could only fix it for an admin account after revoking admin/moderation privileges.
We are seeing these error messages
Message
ActiveRecord::RecordInvalid (Validation failed: There's no need to invite <b>foo@bar.com</b>, they <a href=‘/u/foobar/summary'>already have an account!</a>)
app/models/invite.rb:242:in `invalidate_for_email'
app/controllers/users/omniauth_callbacks_controller.rb:182:in `user_found'
app/controllers/users/omniauth_callbacks_controller.rb:128:in `complete_response_data'
app/controllers/users/omniauth_callbacks_controller.rb:73:in `complete'
app/controllers/application_controller.rb:387:in `block in with_resolved_locale'
app/controllers/application_controller.rb:387:in `with_resolved_locale'
lib/middleware/omniauth_bypass_middleware.rb:50:in `call'
lib/content_security_policy/middleware.rb:12:in `call'
lib/middleware/anonymous_cache.rb:354:in `call'
config/initializers/100-quiet_logger.rb:23:in `call'
config/initializers/100-silence_logger.rb:31:in `call'
lib/middleware/enforce_hostname.rb:23:in `call'
lib/middleware/request_tracker.rb:198:in `call'
Backtrace
activerecord (6.1.4.1) lib/active_record/validations.rb:80:in `raise_validation_error'
activerecord (6.1.4.1) lib/active_record/validations.rb:53:in `save!'
activerecord (6.1.4.1) lib/active_record/transactions.rb:302:in `block in save!'
activerecord (6.1.4.1) lib/active_record/transactions.rb:354:in `block in with_transaction_returning_status'
activerecord (6.1.4.1) lib/active_record/connection_adapters/abstract/database_statements.rb:318:in `transaction'
activerecord (6.1.4.1) lib/active_record/transactions.rb:350:in `with_transaction_returning_status'
activerecord (6.1.4.1) lib/active_record/transactions.rb:302:in `save!'
activerecord (6.1.4.1) lib/active_record/suppressor.rb:48:in `save!'
activerecord (6.1.4.1) lib/active_record/persistence.rb:639:in `block in update!'
activerecord (6.1.4.1) lib/active_record/transactions.rb:354:in `block in with_transaction_returning_status'
activerecord (6.1.4.1) lib/active_record/connection_adapters/abstract/database_statements.rb:320:in `block in transaction'
activerecord (6.1.4.1) lib/active_record/connection_adapters/abstract/transaction.rb:319:in `block in within_new_transaction'
activesupport (6.1.4.1) lib/active_support/concurrency/load_interlock_aware_monitor.rb:26:in `block (2 levels) in synchronize'
activesupport (6.1.4.1) lib/active_support/concurrency/load_interlock_aware_monitor.rb:25:in `handle_interrupt'
activesupport (6.1.4.1) lib/active_support/concurrency/load_interlock_aware_monitor.rb:25:in `block in synchronize'
activesupport (6.1.4.1) lib/active_support/concurrency/load_interlock_aware_monitor.rb:21:in `handle_interrupt'
activesupport (6.1.4.1) lib/active_support/concurrency/load_interlock_aware_monitor.rb:21:in `synchronize'
activerecord (6.1.4.1) lib/active_record/connection_adapters/abstract/transaction.rb:317:in `within_new_transaction'
activerecord (6.1.4.1) lib/active_record/connection_adapters/abstract/database_statements.rb:320:in `transaction'
activerecord (6.1.4.1) lib/active_record/transactions.rb:350:in `with_transaction_returning_status'
activerecord (6.1.4.1) lib/active_record/persistence.rb:637:in `update!'
app/models/invite.rb:242:in `invalidate_for_email'
app/controllers/users/omniauth_callbacks_controller.rb:182:in `user_found'
app/controllers/users/omniauth_callbacks_controller.rb:128:in `complete_response_data'
app/controllers/users/omniauth_callbacks_controller.rb:73:in `complete'
actionpack (6.1.4.1) lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action'
actionpack (6.1.4.1) lib/abstract_controller/base.rb:228:in `process_action'
actionpack (6.1.4.1) lib/action_controller/metal/rendering.rb:30:in `process_action'
actionpack (6.1.4.1) lib/abstract_controller/callbacks.rb:42:in `block in process_action'
activesupport (6.1.4.1) lib/active_support/callbacks.rb:117:in `block in run_callbacks'
app/controllers/application_controller.rb:387:in `block in with_resolved_locale'
i18n (1.8.11) lib/i18n.rb:314:in `with_locale'
app/controllers/application_controller.rb:387:in `with_resolved_locale'
activesupport (6.1.4.1) lib/active_support/callbacks.rb:126:in `block in run_callbacks'
activesupport (6.1.4.1) lib/active_support/callbacks.rb:137:in `run_callbacks'
actionpack (6.1.4.1) lib/abstract_controller/callbacks.rb:41:in `process_action'
actionpack (6.1.4.1) lib/action_controller/metal/rescue.rb:22:in `process_action'
actionpack (6.1.4.1) lib/action_controller/metal/instrumentation.rb:34:in `block in process_action'
activesupport (6.1.4.1) lib/active_support/notifications.rb:203:in `block in instrument'
activesupport (6.1.4.1) lib/active_support/notifications/instrumenter.rb:24:in `instrument'
activesupport (6.1.4.1) lib/active_support/notifications.rb:203:in `instrument'
actionpack (6.1.4.1) lib/action_controller/metal/instrumentation.rb:33:in `process_action'
actionpack (6.1.4.1) lib/action_controller/metal/params_wrapper.rb:249:in `process_action'
activerecord (6.1.4.1) lib/active_record/railties/controller_runtime.rb:27:in `process_action'
actionpack (6.1.4.1) lib/abstract_controller/base.rb:165:in `process'
actionview (6.1.4.1) lib/action_view/rendering.rb:39:in `process'
rack-mini-profiler (2.3.3) lib/mini_profiler/profiling_methods.rb:85:in `block in profile_method'
actionpack (6.1.4.1) lib/action_controller/metal.rb:190:in `dispatch'
actionpack (6.1.4.1) lib/action_controller/metal.rb:254:in `dispatch'
actionpack (6.1.4.1) lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
actionpack (6.1.4.1) lib/action_dispatch/routing/route_set.rb:33:in `serve'
actionpack (6.1.4.1) lib/action_dispatch/journey/router.rb:50:in `block in serve'
actionpack (6.1.4.1) lib/action_dispatch/journey/router.rb:32:in `each'
actionpack (6.1.4.1) lib/action_dispatch/journey/router.rb:32:in `serve'
actionpack (6.1.4.1) lib/action_dispatch/routing/route_set.rb:842:in `call'
omniauth (1.9.1) lib/omniauth/strategy.rb:192:in `call!'
omniauth (1.9.1) lib/omniauth/strategy.rb:169:in `call'
omniauth (1.9.1) lib/omniauth/strategy.rb:192:in `call!'
omniauth (1.9.1) lib/omniauth/strategy.rb:169:in `call'
omniauth (1.9.1) lib/omniauth/strategy.rb:420:in `call_app!'
omniauth (1.9.1) lib/omniauth/strategy.rb:373:in `callback_phase'
omniauth-oauth2 (1.7.2) lib/omniauth/strategies/oauth2.rb:93:in `callback_phase'
omniauth (1.9.1) lib/omniauth/strategy.rb:238:in `callback_call'
omniauth (1.9.1) lib/omniauth/strategy.rb:189:in `call!'
omniauth (1.9.1) lib/omniauth/strategy.rb:169:in `call'
omniauth (1.9.1) lib/omniauth/strategy.rb:192:in `call!'
omniauth (1.9.1) lib/omniauth/strategy.rb:169:in `call'
omniauth (1.9.1) lib/omniauth/strategy.rb:192:in `call!'
omniauth (1.9.1) lib/omniauth/strategy.rb:169:in `call'
omniauth (1.9.1) lib/omniauth/builder.rb:45:in `call'
lib/middleware/omniauth_bypass_middleware.rb:50:in `call'
rack (2.2.3) lib/rack/tempfile_reaper.rb:15:in `call'
rack (2.2.3) lib/rack/conditional_get.rb:27:in `call'
rack (2.2.3) lib/rack/head.rb:12:in `call'
actionpack (6.1.4.1) lib/action_dispatch/http/permissions_policy.rb:22:in `call'
lib/content_security_policy/middleware.rb:12:in `call'
lib/middleware/anonymous_cache.rb:354:in `call'
rack (2.2.3) lib/rack/session/abstract/id.rb:266:in `context'
rack (2.2.3) lib/rack/session/abstract/id.rb:260:in `call'
actionpack (6.1.4.1) lib/action_dispatch/middleware/cookies.rb:689:in `call'
actionpack (6.1.4.1) lib/action_dispatch/middleware/callbacks.rb:27:in `block in call'
activesupport (6.1.4.1) lib/active_support/callbacks.rb:98:in `run_callbacks'
actionpack (6.1.4.1) lib/action_dispatch/middleware/callbacks.rb:26:in `call'
actionpack (6.1.4.1) lib/action_dispatch/middleware/actionable_exceptions.rb:18:in `call'
actionpack (6.1.4.1) lib/action_dispatch/middleware/debug_exceptions.rb:29:in `call'
actionpack (6.1.4.1) lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'
logster (2.10.1) lib/logster/middleware/reporter.rb:43:in `call'
railties (6.1.4.1) lib/rails/rack/logger.rb:37:in `call_app'
railties (6.1.4.1) lib/rails/rack/logger.rb:28:in `call'
config/initializers/100-quiet_logger.rb:23:in `call'
config/initializers/100-silence_logger.rb:31:in `call'
actionpack (6.1.4.1) lib/action_dispatch/middleware/remote_ip.rb:81:in `call'
request_store (1.5.0) lib/request_store/middleware.rb:19:in `call'
actionpack (6.1.4.1) lib/action_dispatch/middleware/request_id.rb:26:in `call'
lib/middleware/enforce_hostname.rb:23:in `call'
rack (2.2.3) lib/rack/method_override.rb:24:in `call'
actionpack (6.1.4.1) lib/action_dispatch/middleware/executor.rb:14:in `call'
rack (2.2.3) lib/rack/sendfile.rb:110:in `call'
actionpack (6.1.4.1) lib/action_dispatch/middleware/host_authorization.rb:92:in `call'
rack-mini-profiler (2.3.3) lib/mini_profiler/profiler.rb:249:in `call'
message_bus (3.4.0) lib/message_bus/rack/middleware.rb:61:in `call'
lib/middleware/request_tracker.rb:198:in `call'
railties (6.1.4.1) lib/rails/engine.rb:539:in `call'
railties (6.1.4.1) lib/rails/railtie.rb:207:in `public_send'
railties (6.1.4.1) lib/rails/railtie.rb:207:in `method_missing'
rack (2.2.3) lib/rack/urlmap.rb:74:in `block in call'
rack (2.2.3) lib/rack/urlmap.rb:58:in `each'
rack (2.2.3) lib/rack/urlmap.rb:58:in `call'
unicorn (6.1.0) lib/unicorn/http_server.rb:634:in `process_client'
unicorn (6.1.0) lib/unicorn/http_server.rb:739:in `worker_loop'
unicorn (6.1.0) lib/unicorn/http_server.rb:547:in `spawn_missing_workers'
unicorn (6.1.0) lib/unicorn/http_server.rb:143:in `start'
unicorn (6.1.0) bin/unicorn:128:in `<top (required)>'
vendor/bundle/ruby/2.7.0/bin/unicorn:25:in `load'
vendor/bundle/ruby/2.7.0/bin/unicorn:25:in `<main>'