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 ('207d88b5109bbbf5efce5fad3d79b42a', -1, 1508554634, 1508554634, '369eee6c', -2, 0, 0)

Line : 189
File : sessions.php