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 ('d3d0240b1789331ff5ecc2e5f3656c7c', -1, 1537962597, 1537962597, '369e34a6', 15, 0, 0)

Line : 189
File : sessions.php