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 ('8b2d18509f1e5df7b276a2cbbb48b837', -1, 1713939080, 1713939080, '03856cf1', -11, 0, 0)

Line : 187
File : sessions.php