[Konstantinos]

Invalid file handle. Check the wiki of how you should use it: https://sampwiki.blast.hk/wiki/Fread

pawn Код:

new 
    File: fhandle = fopen(...); // don't forget the arguments

if (fhandle) // valid file handle
{
    // use file functions (fread, fwrite, fclose etc) inside here only to prevent the server crash
}