修复：部分issue

app/services/webhook/client.rb

@@ -55,7 +55,7 @@ module Webhook::Client
 
       @response_content["status"] = response.code 
       @response_content["headers"] = response.headers 
-      @response_content["body"] = response.body.to_json
+      @response_content["body"] = response.body
 
     rescue => e
       @response_content["status"] = 500 

app/services/webhook/issue_client.rb

@@ -89,6 +89,7 @@ class Webhook::IssueClient
     {
       "action": @changes["assigners"].blank? ? "unassigned" : "assigned",
       "number": @issue.project_issues_index,
+      "changes": @changes,
       "issue": JSON.parse(@issue.to_builder.target!),
       "project": JSON.parse(@issue.project.to_builder.target!),
       "sender": JSON.parse(@sender.to_builder.target!)

app/services/webhook/issue_comment_client.rb

@@ -7,7 +7,7 @@ class Webhook::IssueCommentClient
   def initialize(webhook, issue, journal, sender, event, action_type, comment_json={})
     @webhook = webhook
     @issue = issue.reload
-    @journal = journal.reload
+    @journal = journal.present? ? journal.reload : nil
     @sender = sender.reload
     @event = event 
     @action_type = action_type

app/services/webhook/pull_comment_client.rb

@@ -6,7 +6,7 @@ class Webhook::PullCommentClient
   def initialize(webhook, pull, journal, sender, event, action_type='created', comment_json={})
     @webhook = webhook
     @pull = pull.reload
-    @journal = journal.reload
+    @journal = journal.present? ? journal.reload : nil
     @sender = sender.reload
     @event = event 
     @action_type = action_type