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 ('18757f9c859e54348a3184dc9a0f12f4', -1, 1518897307, 1518897307, '36eb3969', 20, 0, 0)

Line : 211
File : sessions.php