Error messages

[kleinermann]

Hi there,

I have a problem with my prestashop shopping card installation. Since today i get the wsod randomly when opening pages.
There doesn't seem to be any pattern, it just happens completely randomly every 3-6 times i open a new page. I activated already the error messages, and now i get a row of error messages:

Warning: Cannot convert to ordinal value in /var/www/vhosts/mydomain.com/httpdocs/classes/Cookie.php on line 50

Warning: Cannot convert to ordinal value in /var/www/vhosts/mydomain.com/httpdocs/classes/Module.php on line 409

Fatal error: Cannot declare self-referencing constant '' in /var/www/vhosts/mydomain.com/httpdocs/classes/Module.php on line 594

another one:

Warning: Cannot convert to ordinal value in /var/www/vhosts/mydomain.com/httpdocs/classes/Cookie.php on line 50

Warning: Cannot convert to ordinal value in /var/www/vhosts/mydomain.com/httpdocs/classes/Module.php on line 409

Warning: Cannot convert to ordinal value in /var/www/vhosts/mydomain.com/httpdocs/classes/Module.php on line 607

Warning: array_key_exists() [function.array-key-exists]: The second argument should be either an array or an object in /var/www/vhosts/mydomain.com/httpdocs/classes/Module.php on line 607

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 1918987636 bytes) in /var/www/vhosts/mydomain.com/httpdocs/tools/smarty/Smarty.class.php on line 1125

I increased the memory already to 128 within the .htaccess file, and double checked that the memory is increased. But i still get the same error message.

Does anybody know what the issue might be here? I don't have an increase in visitors on the site and i did't make any changes either?

Regards,
honorfield