phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('13b7936e7620887854e203ce22e21530', -1, 1511342175, 1511342175, '3691753c', 4, 0, 0)

Line : 187
File : sessions.php