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, session_admin) VALUES ('7b515f4d946b90f69912ce04b88c4d82', -1, 1713878275, 1713878275, '1276b8ed', 7, 0, 0)

Line : 187
File : sessions.php