MySQL Error: Disk full (C:\xampp\tmp\#sql4d4_fd33a_0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")MSG:DESCRIBE `web_sessions`

Fatal error: Uncaught Exception in C:\UOInfinityWebsite\classes\objects\mysql_db.php:33 Stack trace: #0 C:\UOInfinityWebsite\classes\static\db.php(36): mysql_db->query('DESCRIBE `web_s...') #1 C:\UOInfinityWebsite\classes\static\db.php(225): db::getFields('web_sessions') #2 C:\UOInfinityWebsite\classes\static\session.php(37): db::getData('web_sessions', Object(db_matchobj)) #3 C:\UOInfinityWebsite\common.php(14): session::get() #4 C:\UOInfinityWebsite\index.php(2): include('C:\\UOInfinityWe...') #5 {main} thrown in C:\UOInfinityWebsite\classes\objects\mysql_db.php on line 33