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 ('3764692e6d225d7349ca567742413d51', -1, 1501022274, 1501022274, '369c2041', -2, 0, 0)

Line : 187
File : sessions.php