phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('b16cb20ec2cde0655e55e101577a20e2', -1, 1714408437, 1714408437, '12768adf', -9, 0)

Line : 158
File : sessions.php