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 ('44b6910296bba91106aea5f99176fe15', -1, 1713880350, 1713880350, '1275c4b8', 0, 0, 0)

Line : 187
File : sessions.php