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 ('05e031e5f6fd36a2f15c54a5c57cc07d', -1, 1506040983, 1506040983, '36508c05', 7, 0, 0)

Line : 187
File : sessions.php