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 ('9a5f4d2115cead6cb5a5faaa384a5f9c', -1, 1547890139, 1547890139, '36e23ab1', 58, 0, 0)

Line : 187
File : sessions.php