Error when trying to import a WSDL in JDeveloper 12.1.3

Hello community.

I am trying to import a WSDL in JDeveloper, but I have got a few errors.

When I tried using the WSDL address, I got this error: "No WSDL document could be found at <WSDL_ADDRESS>"; and when I tried saving the WSDL to a file and loading it in JDeveloper, the error is "I/OException thrown when processing <WSDL_ADDRESS> Exception: java.io.FileNotFoundException" (changing the "call?WSDL" part of the address to "call?xsd=15").

I tried putting it in SoapUI, and there it works (however, it did not load the classes for this WSDL). I also asked the responsible for the WSDL, and he told me that the address is right.