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 ('ec2ab1aa47c6c0128c282d41c271db56', -1, 1537509047, 1537509047, '36c6cd99', 2, 0, 0)

Line : 187
File : sessions.php