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 ('1e8c362fbaee71ec64d7bba8f52d78a8', -1, 1519567004, 1519567004, '36e2fd22', 6, 0, 0)

Line : 211
File : sessions.php