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 ('c7a5cde78c1c17eaa52e5c6f2b6824ec', -1, 1715111755, 1715111755, '12756f01', 4, 0, 0)

Line : 189
File : sessions.php