[xir]

First warning

pawn Код:

forward OnPlayerPrivmsg(playerid, recieverid, text[]); // This need to be above the public

but check this
https://sampwiki.blast.hk/wiki/OnPlayerPrivmsg

Код:

Warning: This callback was removed in SA-MP 0.3.

Second error

pawn Код:

new ingodcar[MAX_PLAYERS]; // at the top of your script