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 ('8f2614d70ae821cb6f2a9883e5f417ae', -1, 1730417260, 1730417260, '127613cf', -1280, 0, 0)

Line : 195
File : sessions.php