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 ('8350113f27ec6b4ff06abbe0712536da', -1, 1713922576, 1713922576, '038d08f7', -9, 0, 0)

Line : 187
File : sessions.php