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 ('4587d2b03bf07ac2ccf2ed194a1739a8', -1, 1490743331, 1490743331, '36a6551d', -11, 0, 0)

Line : 189
File : sessions.php