I don't get any erros on my
Windows 10
Chrome
But of cause I don't have the right information so maybe it only work because of dummy data.
Download here ZIP file
https://github.com/Ninkip2p/ninki-recover
Unzip on Desktop
Open recover.html in Chrome (don't move it from the folder - just right click an open)
**
If you give up and want to trust me a try fell free to contact me. You can type the data on skype.