Starting a new download immediately after one finishes can occasionally trigger errors. Some developers resolve this by implementing a short "sleep" period (e.g., 1000ms) between tasks.
Developers and users sometimes encounter errors when interacting with this service: Search results for download manager (328)
Errors can occur if a URL contains special characters or spaces (like %20 ) that aren't properly decoded before being passed to the manager. Starting a new download immediately after one finishes