Players can not be spawned

Hi there,
The ‘error’ or the thing is:
Almost ~10 people can join a vRP based server and then, a error shows up and no one can be spawned, the error triggers a other problems on the server, like identifing the players that are spawning, so basically, anything linked to ‘user_id’ functions.
The server is optimised, already tried other artifacts. The server has enough ram, cpu power and the slots are 128 with aurum key.
The photo below is screnshoted by me, using Zap-Hosting.
(https://cdn.discordapp.com/attachments/783113888468172830/813358683340800020/unknown.png)