fillet error

 From:  Wolf301 (AVILA)
10784.1 
Hello, I am trying to make a fillet in this piece, with a radius of 7, but this gives me an error when selecting a complete line, I do not see that it is cut anywhere, but even so the program only allows me to apply a radius of one and with the mode constant. Attached images and the file.
Attachments:

Image Attachments:
Size: 314.4 KB, Downloaded: 38 times, Dimensions: 1425x976px
Size: 638.8 KB, Downloaded: 30 times, Dimensions: 1917x1039px