Diyhue Flash Tool Fails

Im trying to use the online flash tool to flash a wemos d1 mini with the Signe-gradient v4 file.
The tool fails with an error that i cant find the file?

I have tried with different versions of the gradient file with same result?
Does the link pointing to the files need to be updated? And also, what file would be best for creating a signe lamp using SK6812 led strip?

Thank you

Or maybe someone can help me with an error i get when i try to flash the file to my wemos d1 in arduino ide.

I get an error that it cant find LittleFS - i have tried to import the library without any luck.

Same challenge when i try to flash using PlatformIO