Merge branch 'develop' of https://github.com/spaulins-usgs/flopy into develop

Author: scottrp

flopy/mf6/mfmodel.py

@@ -793,6 +793,9 @@ def load_base(
         package_recarray = instance.simulation_data.mfdata[
             (modelname, "nam", "packages", "packages")
         ]
+        if package_recarray.array is None:
+            return instance
+
         for item in package_recarray.get_data():
             if item[0] in priority_packages:
                 packages_ordered.insert(0, (item[0], item[1], item[2]))

flopy/mf6/mfsimbase.py

@@ -805,6 +805,9 @@ def load(
                 package="nam",
                 message=message,
             )
+        if models is None:
+            return instance
+
         for item in models:
             # resolve model working folder and name file
             path, name_file = os.path.split(item[1])