Fix typing

CURA-8588

plugins/Marketplace/LocalPackageList.py

@@ -52,7 +52,8 @@ class LocalPackageList(PackageList):
         be updated, it is in the to remove list and isn't in the to be installed list
         """
         package = self.getPackageModel(package_id)
-        if not package.canUpdate and \
+
+        if package and not package.canUpdate and \
                 package_id in self._package_manager.getToRemovePackageIDs() and \
                 package_id not in self._package_manager.getPackagesToInstall():
             index = self.find("package", package_id)

plugins/Marketplace/Marketplace.py

@@ -3,7 +3,7 @@
 
 import os.path
 from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject
-from typing import Optional
+from typing import Optional, cast
 
 from cura.CuraApplication import CuraApplication  # Creating QML objects and managing packages.
 
@@ -100,7 +100,7 @@ class Marketplace(Extension, QObject):
 
     def checkIfRestartNeeded(self) -> None:
         if self._package_manager.hasPackagesToRemoveOrInstall or \
-                self._plugin_registry.getCurrentSessionActivationChangedPlugins():
+                cast(PluginRegistry, self._plugin_registry).getCurrentSessionActivationChangedPlugins():
             self._restart_needed = True
         else:
             self._restart_needed = False

plugins/Marketplace/PackageList.py

@@ -53,7 +53,6 @@ class PackageList(ListModel):
 
     def __del__(self) -> None:
         """ When this object is deleted it will loop through all registered API requests and aborts them """
-
         try:
             self.isLoadingChanged.disconnect()
             self.hasMoreChanged.disconnect()
@@ -192,7 +191,10 @@ class PackageList(ListModel):
             Logger.warning(f"Could not install {package_id}")
             return
         package = self.getPackageModel(package_id)
-        self.subscribeUserToPackage(package_id, str(package.sdk_version))
+        if package:
+            self.subscribeUserToPackage(package_id, str(package.sdk_version))
+        else:
+            Logger.log("w", f"Unable to get data on package {package_id}")
 
     def download(self, package_id: str, url: str, update: bool = False) -> None:
         """Initiate the download request
@@ -283,7 +285,8 @@ class PackageList(ListModel):
             self.download(package_id, url, False)
         else:
             package = self.getPackageModel(package_id)
-            self.subscribeUserToPackage(package_id, str(package.sdk_version))
+            if package:
+                self.subscribeUserToPackage(package_id, str(package.sdk_version))
 
     def uninstallPackage(self, package_id: str) -> None:
         """Uninstall a package from the Marketplace