AssertionError on client side after bot restart | Sometimes it is a RuntimeError

[FightMan01]

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/quart/app.py", line 1467, in handle_request
    return await self.full_dispatch_request(request_context)
  File "/usr/local/lib/python3.8/dist-packages/quart/flask_patch/app.py", line 26, in new_full_dispatch_request
    return await old_full_dispatch_request(self, request_context)
  File "/usr/local/lib/python3.8/dist-packages/quart/app.py", line 1492, in full_dispatch_request
    result = await self.handle_user_exception(error)
  File "/usr/local/lib/python3.8/dist-packages/quart/app.py", line 968, in handle_user_exception
    raise error
  File "/usr/local/lib/python3.8/dist-packages/quart/app.py", line 1490, in full_dispatch_request
    result = await self.dispatch_request(request_context)
  File "/usr/local/lib/python3.8/dist-packages/quart/app.py", line 1536, in dispatch_request
    return await self.ensure_async(handler)(**request_.view_args)
  File "/home/Fightman01Bot/dash/main.py", line 1352, in generateweb
    user_ids_json = await ipc_client.request("get_user", payload=x)
  File "/usr/local/lib/python3.8/dist-packages/nextcord/ext/ipc/client.py", line 104, in request
    await self.websocket.send_json(payload)
  File "/usr/local/lib/python3.8/dist-packages/aiohttp/client_ws.py", line 160, in send_json
    await self.send_str(dumps(data), compress=compress)
  File "/usr/local/lib/python3.8/dist-packages/aiohttp/client_ws.py", line 148, in send_str
    await self._writer.send(data, binary=False, compress=compress)
  File "/usr/local/lib/python3.8/dist-packages/aiohttp/http_websocket.py", line 649, in send
    await self._send_frame(message, WSMsgType.TEXT, compress)
  File "/usr/local/lib/python3.8/dist-packages/aiohttp/http_websocket.py", line 626, in _send_frame
    await self.protocol._drain_helper()
  File "/usr/local/lib/python3.8/dist-packages/aiohttp/base_protocol.py", line 78, in _drain_helper
    assert waiter is None or waiter.cancelled()
AssertionError

[DenverCoder1]

This seems like an aiohttp issue

[DenverCoder1]

Relevant PR in aiohttp that fixes this: aio-libs/aiohttp#6028

[FightMan01]

Sometimes I get a RuntimeError as well:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/quart/app.py", line 1467, in handle_request
    return await self.full_dispatch_request(request_context)
  File "/usr/local/lib/python3.8/dist-packages/quart/flask_patch/app.py", line 26, in new_full_dispatch_request
    return await old_full_dispatch_request(self, request_context)
  File "/usr/local/lib/python3.8/dist-packages/quart/app.py", line 1492, in full_dispatch_request
    result = await self.handle_user_exception(error)
  File "/usr/local/lib/python3.8/dist-packages/quart/app.py", line 968, in handle_user_exception
    raise error
  File "/usr/local/lib/python3.8/dist-packages/quart/app.py", line 1490, in full_dispatch_request
    result = await self.dispatch_request(request_context)
  File "/usr/local/lib/python3.8/dist-packages/quart/app.py", line 1536, in dispatch_request
    return await self.ensure_async(handler)(**request_.view_args)
  File "/var/www/fm01.hu/public_html/main.py", line 51, in web_gen
    name = await ipc_client.request("get_guild_name", serverid=row["serverid"])
  File "/usr/local/lib/python3.8/dist-packages/nextcord/ext/ipc/client.py", line 108, in request
    recv = await self.websocket.receive()
  File "/usr/local/lib/python3.8/dist-packages/aiohttp/client_ws.py", line 216, in receive
    raise RuntimeError("Concurrent call to receive() is not allowed")
RuntimeError: Concurrent call to receive() is not allowed

[FightMan01]

Update on this:
aiohttp 3.8 released with a fix: https://github.com/aio-libs/aiohttp/releases/tag/v3.8.0