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 ('61e5b726288d3cc47797c7370077277c', -1, 1711671050, 1711671050, '03eec351', -4, 0, 0)

Line : 187
File : sessions.php