Fatal error: Uncaught TypeError: fwrite(): Argument #1 ($stream) must be of type resource, false given in E:\Web4\server_func1.php:504
Stack trace:
#0 E:\Web4\server_func1.php(504): fwrite()
#1 E:\Web4\server_func1.php(4502): debug_mail()
#2 E:\Web4\server_func1.php(9): transfer_szinkron()
#3 E:\Web4\index.php(8): include_once('...')
#4 {main}
thrown in E:\Web4\server_func1.php on line 504