When i place the screen, it looks normal but when i re-place the screen, the screen could not render but when i put the fluid or other reader, it crashed.

Crash Report : https://pastebin.com/NB9qpYuZ
MC version : 1.12.2
Mod Version : 3.0.0
Forge Version : 1.12-forge1.12.2-14.23.3.2673

this is blank screen looks like, Without GUIS on side, placing some connector will crash the game, idk if that is de-sync or something

reloading seems fix it, idk why if that was a de-sync or something, if that de-sync that's mean it might be a problem...

Thanks for reporting, already fixed this one as it happens. You can see current issues with the alpha I'm working through here, hope to have a new version soon.

Good to hear, let me know if you find any other issues!

New Version seems fixed it, thanks
i just updated the mod to 3.0.1 and sonar core, and it works normally