I have the Waiting for Server issue.

It appears a few days ago i ran 0.4.29, now i updated to 0.4.34 but this issue does not disappear.

The game ist running (daycycle ist still working) i can move. Exeryting else is "waiting" no block-interaction and the npc are not moving.

I see some warns / errors, this is something for the @allthemods7 support.
You could try backup your singleplayer save and reinstall the modpack and see if this helps.

Ok, i made a complete new installation of the modpack. Loaded the save file, but ithis didnt helped.

How much ram did you set for your server and client??

I run it on my pc in single player mode. I put in the max. RAM which i can choose from Forge, its arround 14GB

Can you provide the latest log / crash log?

as soon i look at entities (in my case some sheeps) the problems appears.

I got the logfile
latest.log

Sounds like a lag issue possibly? Can you run /spark tps and see what your current TPS is? If it's red, run a spark profile /spark profiler --timeout 60 and post the link. Or if you can zip up the world folder and send it I can take a look.

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

I was off quite a while, now i could play again for 1h the suddenly it happens again, the command /spark tps shows 20 all the way when i could play, when it shows "waiting on server" the command does not work at all and i can not see what the tps are.