I'm in 1.8.8
With the latest Build of protocolLib (I have already tried with the stable version of 5.0).
He the problem is when I upgrade the Protocol Version at 5.0 at least, (I need to have it at 5.0), it shows me some "armor bugs", for armor stands, holograms from holographic displays and for armor on players.

So to reproduce this, unload / load chunks several time and you will se some of your armors stands with no "VISUAL" armors. same for players, kill them, get back, do it several time and you will definitely have this bug.

Same problem with chat, there is some problems like lines is not displayed in ordrers

dump-2023-07-13_01.20.13.txt

here it is !
and yes sorry i'm juste i little bit stressing it's kind of urgent so.. ^^

hello???

Please share the output of /protocol dump

then?

It's urgent please

It's hard to tell what is going wrong here as you are using a lot of closed source plugin that use ProtocolLib.

Please first verify that it caused by ProtocolLib by just putting ProtocolLib and no other plugins on the server.
Then add each of your plugins one after another and check when the problems starts to occur so we know somewhat of the source of your problem.

From the dump you sent, I suspect that the problem is either zTournament or PvpGambling. Both plugins seem to implement the same Entity Hider - maybe this conflicts and causes this problem.

Okay so I've tested if pvpgambling and zTournement, and ztournement was the problem, thank you to help me I really appreciate like really ! thank you very much !

but the chat is still broken, with the 2 disabled

Okay, good to hear.
What's wrong with the chat? I guess it is probably also caused by another plugin that is incompatible with ProtocolLib

hum I don't know, but like the lines is not in order, like I have the title down and the texte up, is not supposed to be like this

Ok I foud It thanks you very much I really appreciate !

Can confirm I see similar issues with v5 (mainly with holograms and chat not working). Last v4 (4.8.0 I think it was?) build woks without any issues. Handful of private plugins however. Am running 1.8.8

Without any code to reproduce it's nearly impossible to find the cause of this. We need at least some working code to get the issue running and some steps to then actually see the issue that you're describing.