Expected "Content-Type" header to be one of {'application/json'}.

[VTMGR]

Summary

Accepting friend requests is broken.

Reproduction Steps

1. Add this into the example discord.py-self bot.

   @bot.event
   async def on_relationship_add(after):
   if (after.type==discord.RelationshipType.incoming_request):
       await after.accept();

2. Send a friend request to the user.

Code

import discord
bot = discord.Client()

@bot.event
async def on_relationship_add(after):
    if (after.type==discord.RelationshipType.incoming_request):
        await after.accept();

bot.run('token')

Expected Results

The friend request is accepted.

Actual Results

This error occurs and the request is not accepted.

[2023-12-04 03:20:51] [ERROR   ] discord.client: Ignoring exception in on_relationship_add
Traceback (most recent call last):
  File "C:\Users\####\AppData\Local\Programs\Python\Python310\lib\site-packages\discord\client.py", line 507, in _run_event
    await coro(*args, **kwargs)
  File "E:\bot.py", line 27, in on_relationship_add
    await after.accept();
  File "C:\Users\####\AppData\Local\Programs\Python\Python310\lib\site-packages\discord\relationship.py", line 298, in accept
    await self._state.http.add_relationship(self.user.id, action=RelationshipAction.accept_request)
  File "C:\Users\####\AppData\Local\Programs\Python\Python310\lib\site-packages\discord\http.py", line 838, in request
    raise HTTPException(response, data)
discord.errors.HTTPException: 400 Bad Request (error code: 50035): Invalid Form Body
In miscallenous: Expected "Content-Type" header to be one of {'application/json'}.

System Information

• Python v3.10.0-final
• discord.py-self v2.0.0-final
• aiohttp v3.9.0
• system info: Windows 10 10.0.19045

Checklist

• [X] I have searched the open issues for duplicates.
• [X] I have shared the entire traceback.
• [X] I am using a user token (and it isn't visible in the code).

Additional Information

No response

[VTMGR]

Duplicate of Friendship Requests cannot be accepted #518

[dolfies]

This is indeed a duplicate, and is fixed in the alpha.