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 ('2dfc67f6f0c991e8cf599cf4ea72bf3e', -1, 1519557312, 1519557312, '365a773b', -1, 0, 0)

Line : 187
File : sessions.php