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 ('da2a74bb4926a7e22f00de30b6116ff9', -1, 1730416953, 1730416953, '038e8593', -1280, 0, 0)

Line : 195
File : sessions.php