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 ('33e2bd7ee80dec6723bca8199ffea4d1', -1, 1714305250, 1714305250, '0a020003', 1, 0, 0)

Line : 187
File : sessions.php