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 ('fdce6b97c3b8ffc9da80cdfbe1904ca0', -1, 1715028788, 1715028788, '12dab8d6', 0, 0, 0)

Line : 189
File : sessions.php