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 ('36f697879e3e76e6006deeac5b09beba', -1, 1713947537, 1713947537, '038d08f7', -1, 0, 0)

Line : 187
File : sessions.php