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 ('3cb5b65d378e7a3c1a400e6e3894f811', -1, 1713521324, 1713521324, '1275bc40', -7, 0, 0)

Line : 187
File : sessions.php