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) VALUES ('18eb2b47281ed57fa6e618b8f3a433cd', -1, 1714641507, 1714641507, '039177c7', 3, 0)

Line : 158
File : sessions.php