Use bang for trigger.trigger_requests.create

app/services/ci/pipeline_trigger_service.rb

@@ -14,7 +14,7 @@ module Ci
 
       pipeline = Ci::CreatePipelineService.new(project, trigger.owner, ref: params[:ref])
         .execute(:trigger, ignore_skip_ci: true) do |pipeline|
-          trigger.trigger_requests.create(pipeline: pipeline)
+          trigger.trigger_requests.create!(pipeline: pipeline)
           create_pipeline_variables!(pipeline)
         end