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 ('56875562112ff0c4188024e6da8ec0ab', -1, 1534450678, 1534450678, '36c660c6', -4, 0, 0)

Line : 187
File : sessions.php