Dmitry

> If the form is not valid you will get a proper error message, no need to add an extra one. @camilonova sorry but you didnt understand what problem the...

@camilonova i fixed build (tests, as i understand)

@Mogost done, rebuilded (sorry for wait)

i have the same problem on redis==5.0.8, rollback to redis==5.0.7 works for me ``` ... File ".../env/lib/python3.9/site-packages/channels_redis/core.py", line 504, in group_add await connection.zadd(group_key, {channel: time.time()}) File ".../env/lib/python3.9/site-packages/redis/asyncio/client.py", line 610, in...