Hello,
As part of a new community I have been working on, I have encountered some issues with getting the single sign on of WP Discourse working. In my config Wordpress has been set up as the client while the Discourse install is the SSO provider. Both have a matching secret key configured. When I try to either link my account or log in via Discourse my browser throws out the following error.
Oops
The software powering this discussion forum encountered an unexpected problem. We apologize for the inconvenience.
Detailed information about the error was logged, and an automatic notification generated. We’ll take a look at it.
No further action is necessary. However, if the error condition persists, you can provide additional detail, including steps to reproduce the error, by posting a discussion topic in the site’s feedback category.
When I then check the Discourse error log from the admin interface I see
TypeError (no implicit conversion of nil into String) /var/www/discourse/lib/single_sign_on.rb:108:inhexdigest’`
When I click it I get the backtrace:
/var/www/discourse/lib/single_sign_on.rb:108:in `hexdigest' /var/www/discourse/lib/single_sign_on.rb:108:in `sign' /var/www/discourse/lib/single_sign_on.rb:63:in `parse' /var/www/discourse/lib/single_sign_on_provider.rb:8:in `parse' /var/www/discourse/app/controllers/session_controller.rb:50:in `sso_provider' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/abstract_controller/base.rb:194:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_controller/metal/rendering.rb:30:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/abstract_controller/callbacks.rb:42:in `block in process_action' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/callbacks.rb:132:in `run_callbacks' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/abstract_controller/callbacks.rb:41:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_controller/metal/rescue.rb:22:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_controller/metal/instrumentation.rb:34:in `block in process_action' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/notifications.rb:168:in `block in instrument' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/notifications/instrumenter.rb:23:in `instrument' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/notifications.rb:168:in `instrument' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_controller/metal/instrumentation.rb:32:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_controller/metal/params_wrapper.rb:256:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/activerecord-5.2.2/lib/active_record/railties/controller_runtime.rb:24:in `process_action' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/abstract_controller/base.rb:134:in `process' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionview-5.2.2/lib/action_view/rendering.rb:32:in `process' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-mini-profiler-1.0.1/lib/mini_profiler/profiling_methods.rb:104:in `block in profile_method' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_controller/metal.rb:191:in `dispatch' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_controller/metal.rb:252:in `dispatch' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/routing/route_set.rb:52:in `dispatch' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/routing/route_set.rb:34:in `serve' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/journey/router.rb:52:in `block in serve' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/journey/router.rb:35:in `each' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/journey/router.rb:35:in `serve' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/routing/route_set.rb:840:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-protection-2.0.3/lib/rack/protection/frame_options.rb:31:in `call' /var/www/discourse/lib/middleware/omniauth_bypass_middleware.rb:32:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/tempfile_reaper.rb:15:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/conditional_get.rb:25:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/head.rb:12:in `call' /var/www/discourse/lib/content_security_policy/middleware.rb:12:in `call' /var/www/discourse/lib/middleware/anonymous_cache.rb:216:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/session/abstract/id.rb:232:in `context' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/session/abstract/id.rb:226:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/cookies.rb:670:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/callbacks.rb:28:in `block in call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/callbacks.rb:98:in `run_callbacks' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/callbacks.rb:26:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/debug_exceptions.rb:61:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/show_exceptions.rb:33:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/logster-1.3.1/lib/logster/middleware/reporter.rb:31:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/rack/logger.rb:38:in `call_app' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/rack/logger.rb:28:in `call' /var/www/discourse/config/initializers/100-quiet_logger.rb:16:in `call' /var/www/discourse/config/initializers/100-silence_logger.rb:29:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/remote_ip.rb:81:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/request_id.rb:27:in `call' /var/www/discourse/lib/middleware/enforce_hostname.rb:17:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/method_override.rb:22:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/actionpack-5.2.2/lib/action_dispatch/middleware/executor.rb:14:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/sendfile.rb:111:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-mini-profiler-1.0.1/lib/mini_profiler/profiler.rb:281:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/message_bus-2.2.0.pre.1/lib/message_bus/rack/middleware.rb:57:in `call' /var/www/discourse/lib/middleware/request_tracker.rb:180:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:524:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/railtie.rb:190:in `public_send' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/railtie.rb:190:in `method_missing' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/urlmap.rb:68:in `block in call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/urlmap.rb:53:in `each' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/urlmap.rb:53:in `call' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/http_server.rb:606:in `process_client' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/http_server.rb:701:in `worker_loop' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/http_server.rb:549:in `spawn_missing_workers' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/lib/unicorn/http_server.rb:142:in `start' /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/unicorn-5.4.0/bin/unicorn:126:in `<top (required)>' /var/www/discourse/vendor/bundle/ruby/2.5.0/bin/unicorn:23:in `load' /var/www/discourse/vendor/bundle/ruby/2.5.0/bin/unicorn:23:in `<main>'`
My Discourse is running latest version on a DO droplet with Ubuntu 18.04, my Wordpress is running 5.0.2 on Nginx on a Centos 7 droplet with php-fpm 7.3. Anyone have any idea what is going on here?
That did the job for me.