For the internal XSD version, prefer the entry "schemaVersion"

utils.py

@@ -40,11 +40,16 @@ def get_xsd(cfg, xsd_version=None, xml_str = None):
             url = baseURL + 'v' + xsd_version + '/' + filename
     else:
       root = parse(xml_str)
-      for item in root.attrib.items():
-          x = item[1].split()
-          for url in x:
-              if url.endswith(filename):
-                  break
+      item = root.attrib.get('schemaVersion')
+      if item:
+          url = baseURL + 'v' + item + '/' + filename
+      else:
+        for key in root.attrib:
+            if key.endswith('schemaLocation'):
+                x = root.attrib.get(key).split()
+                for url in x:
+                    if url.endswith(filename):
+                        break       
     if uri_validator(url):
         try:
             r = requests.get(url)