Fix #311 : Exception when dealing with malformed SLD (#312)

* Fix #311 : Exception when dealing with malformed SLD

* Fix #311 : Address formatting issues

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Co-authored-by: Giovanni Allegri <giovanni.allegri@gmail.com>

Author: timlinux

.gitignore

@@ -134,3 +134,6 @@ dmypy.json
 # Development
 .idea/
 .vscode/
+# Generated files
+src/qgis_geonode/metadata.txt
+src/qgis_geonode/resources.py

src/qgis_geonode/utils.py

@@ -54,7 +54,14 @@ def remove_comments_from_sld(element):
 def url_from_geoserver(base_url: str, raw_url: str):
 
     # Clean the URL path from trailing and back slashes
-    url_path = urlparse(raw_url).path.strip("/")
+    try:
+        url_path = urlparse(raw_url).path.strip("/")
+    except TypeError:
+        QgsMessageLog.logMessage(
+            "Incorrect type returned from GeoServer", 
+            "GeoNode", 
+            Qgis.Warning)
+        return None
 
     url_path = url_path.split("/")
     # re-join URL path without the geoserver path