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 ('4cca21b24dea282f3bd4b1c4fc04bf6a', -1, 1715239271, 1715239271, '12dbbdf7', 7, 0, 0)

Line : 189
File : sessions.php