this is not a client issue as my friend is having the same problem

Chunks arent loading as it should be, one it does I spawned in a different location once logged in into the server, sometimes underground sometimes in the void. But it teleports me to where I should be but I cant do anything but chat. The server's loading the chat but not the block breaking nor movement (most of the times). I've tried using 9GB of ram to test the server so it's not a hardware issue and the issue persists. This was the error that appeared after it kicks me out :

internal exception java.net.socketexception connection reset