VarCloner.php spitting error trying to login to admin page after login

1

HI team, please help me tackle this problem.

while trying to login to admin pages, and after the authentication CRIKEY screen with

Uncaught exception 'Whoops\Exception\ErrorException' with message 'Undefined index: �ูล Exif ที่แก้ไขโดยอัตโนมัติ'   
in /var/www/html/staff/vendor/symfony/var-dumper/Cloner/VarCloner.php:89   
Stack trace: #0 [internal function]: Whoops\Run->handleError(8, 'Undefined index...', '/var/www/html/s...', 89)   
#1 /var/www/html/staff/system/src/Grav/Common/Debugger.php(314): call_user_func(Array, 8, 'Undefined index...', '/var/www/html/s...', 89)   
#2 [internal function]: Grav\Common\Debugger->deprecatedErrorHandler(8, 'Undefined index...', '/var/www/html/s...', 89, Array)   
#3 /var/www/html/staff/vendor/symfony/var-dumper/Cloner/AbstractCloner.php(223): call_user_func(Array, 8, 'Undefined index...', '/var/www/html/s...', 89, Array)   
#4 /var/www/html/staff/vendor/symfony/var-dumper/Cloner/VarCloner.php(89): Symfony\Component\VarDumper\Cloner\AbstractCloner->Symfony\Component\VarDumper\Cloner\{closure}(8, 'Undefined index...', '/var/www/html/s...', 89, Array)   
#5 /var/www/html/staff/ve

any ideas how to fix this?

2

The funny thing is when I

service httpd restart

I’m always able to login without crash.

3

This may be caused by

zend_mm_heap corrupted

solution:

php.ini -> add or set  opcache.enable=0;
service httpd restart