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 ('5caf7f8765eb7bcd5c3b1b2cb3ea0de1', -1, 1566157266, 1566157266, '12e8ab12', 69, 0, 0)

Line : 187
File : sessions.php