fix

app/controllers/pull_requests_controller.rb

@@ -58,7 +58,7 @@ class PullRequestsController < ApplicationController
     ActiveRecord::Base.transaction do
       @pull_request, @gitea_pull_request = PullRequests::CreateService.call(current_user, @owner, @project, params)
       if @gitea_pull_request[:status] == :success
-        @pull_request.bind_gitea_pull_request!(@gitea_pull_request[:body]["number"])
+        @pull_request.bind_gitea_pull_request!(@gitea_pull_request[:body]["number"], @gitea_pull_request[:body]["id"])
         SendTemplateMessageJob.perform_later('PullRequestAssigned', current_user.id, @pull_request&.id)
         SendTemplateMessageJob.perform_later('ProjectPullRequest', current_user.id, @pull_request&.id)
       else

app/models/pull_request.rb

@@ -54,7 +54,7 @@ class PullRequest < ApplicationRecord
     Project.find_by(id: self.fork_project_id)
   end
 
-  def bind_gitea_pull_request!(gitea_pull_number, gitea_pull_id=gitea_pull_number)
+  def bind_gitea_pull_request!(gitea_pull_number, gitea_pull_id)
     update_columns(
       gitea_number: gitea_pull_number,
       gitea_id: gitea_pull_id)