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 ('7489e4985890ce3f2b0ab9d2671e2c9c', -1, 1542753899, 1542753899, '365207e7', 15, 0, 0)

Line : 189
File : sessions.php