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 ('5a802e2662c6cc1584f73eb7e6c89a4d', -1, 1547727125, 1547727125, '22e0663c', -1, 0, 0)

Line : 189
File : sessions.php