Fix bug in contact command

Author: kyb3r

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+# 2.13.6
+
+### Fixed
+
+Fixed a bug in the contact command where the response message did not send.
+
 # 2.13.5
 
 ### Added

cogs/modmail.py

@@ -602,7 +602,11 @@ async def edit(self, ctx, message_id: Optional[int] = None,
     async def contact(self, ctx,
                       category: Optional[discord.CategoryChannel] = None, *,
                       user: Union[discord.Member, discord.User]):
-        """Create a thread with a specified member."""
+        """Create a thread with a specified member.
+        
+        If the optional category argument is passed, the thread
+        will be created in the specified category.
+        """
 
         if user.bot:
             embed = discord.Embed(
@@ -622,6 +626,7 @@ async def contact(self, ctx,
         else:
             thread = self.bot.threads.create(user, creator=ctx.author,
                                              category=category)
+            await thread.wait_until_ready()
             embed = discord.Embed(
                 title='Created thread',
                 description=f'Thread started in {thread.channel.mention} '