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 ('94d09c79c47b3521d95b8764c21fec2b', -1, 1713248588, 1713248588, '12769172', -11, 0, 0)

Line : 187
File : sessions.php