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 ('9c3e2d002f9a8ec0bc1f311204f1ad58', -1, 1730420360, 1730420360, '038b5173', -1280, 0, 0)

Line : 195
File : sessions.php