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 ('0c9996abc320baf4d6d12293beacb0b0', -1, 1542287334, 1542287334, '3692c318', 4, 0, 0)

Line : 186
File : sessions.php