Try removing all the spaces and special characters (% = , & ...) in your path.
you can use _ instead of spaces, and you have to avoid invalid characters shown in your error.
The path is where you put your .idf file ("C:\Users[...]").
For example, it will work if you simply put your .idf in "C:\Users\pc63u\Desktop\".
Just avoid special characters all along your path and it will work fine.