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 ('6dba8eb0c6a01eff10d21a7c49290fc8', -1, 1502888382, 1502888382, '36a6986f', -4, 0, 0)

Line : 189
File : sessions.php