Error message

• Notice: unserialize(): Error at offset 18 of 29 bytes in variable_initialize() (line 1202 of /var/www/html/casinovenezia/includes/bootstrap.inc).
• Notice: unserialize(): Error at offset 18 of 29 bytes in variable_initialize() (line 1202 of /var/www/html/casinovenezia/includes/bootstrap.inc).