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 ('e1454b65afec7a8d0a4c9abf1d7b2f73', -1, 1529328273, 1529328273, '369e0f61', 0, 0, 0)

Line : 187
File : sessions.php