سلام بعد از ساختن صفحات وردپرس این ارور رو میده

Warning: strpos() expects parameter 1 to be string, array given in C:\xampp\htdocs\wordpress\wp-includes\functions.php on line 5971

Warning: substr() expects parameter 1 to be string, array given in C:\xampp\htdocs\wordpress\wp-includes\functions.php on line 5978

Recoverable fatal error: Object of class user could not be converted to string in C:\xampp\htdocs\wordpress\wp-includes\functions.php on line 1909