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 ('4e5c87592729e1e0ce6fc2bf3bcc8fcb', -1, 1560999909, 1560999909, 'c0a80304', 4, 0, 0)

Line : 188
File : sessions.php