Warning: Trying to access array offset on value of type null in /var/www/planilla/services/login/comprobarUsuario.php on line 8

Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/planilla/services/login/comprobarUsuario.php on line 8
{"login":false,"mensaje":"Usuario no encontrado"}