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 ('bdb80758ca12c7a2ddb4662361c035e0', -1, 1747893384, 1747893384, '12deb495', 30, 0, 0)

Line : 190
File : sessions.php