phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('9ff4323b1ef6130f39313685e3e7c91a', -1, 1715316971, 1715316971, '12bfef7b', 7, 0, 0)

Line : 189
File : sessions.php