/build/lib/wayback_machine_downloader.rb:182:in `to_json': source sequence is illegal/malformed utf-8 (JSON::GeneratorError)
from /build/lib/wayback_machine_downloader.rb:182:in `block in list_files'
from /build/lib/wayback_machine_downloader.rb:181:in `each'
from /build/lib/wayback_machine_downloader.rb:181:in `list_files'
from /build/bin/wayback_machine_downloader:70:in `<top (required)>'
from /usr/local/bundle/bin/wayback_machine_downloader:17:in `load'
from /usr/local/bundle/bin/wayback_machine_downloader:17:in `<main>'
seems some url contain some invalid % escape sequence
seems some url contain some invalid % escape sequence