I CAN NOT ENTER MY SERVER please help.

Hello, good afternoon, I have a small problem when entering my server.
I enter and for a few seconds it says: "loading terrain" and it disconnects me.

this is what the console says when I enter:

[01:07:34] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 3881ms or 77 ticks behind

[01:07:49] [User Authenticator #1/INFO]: UUID of player MaurI_16 is 81315fa6-e39f-41cc-986a-5300625d97ea

[01:07:49] [Server thread/INFO]: MaurI_16[/] logged in with entity id 592 at (-136.5, 71.0, -81.5)

[01:07:49] [Server thread/INFO]: MaurI_16 joined the game

[01:07:53] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 4882ms or 97 ticks behind

[01:08:21] [Server thread/INFO]: MaurI_16 lost connection: Disconnected

[01:08:21] [Server thread/INFO]: MaurI_16 left the game

[01:08:25] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2006ms or 40 ticks behind

PLEASE HELP!

No, just my friend. He tells me that he has a good ping and that his internet is good.

PLEASE HELP

What do you mean by that? remove ./minecraft?
my friend already did it.
and it did not work.