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 ('867e755a59449a9f1ffde9910e0a67a0', -1, 1566524581, 1566524581, '22cca94c', 19, 0, 0)

Line : 189
File : sessions.php