virtual: handle copy error in image restore

Add a proper error report for the shutil.copy operation in
image_restore() instead of silently returning.

src/virtual/ogOperations.py

@@ -449,9 +449,10 @@ class OgVirtualOperations:
         subprocess.run([cmd], shell=True, check=True)
 
         try:
-            shutil.copy(f'{self.OG_IMAGES_PATH}/{name}', drive_path)
-        except:
-            return None
+            copy_src = f'{self.OG_IMAGES_PATH}/{name}'
+            shutil.copy(copy_src, drive_path)
+        except Exception as e:
+            raise OgError(f'Error trying to copy {copy_src} into {drive_path}: {e}') from e
 
         subprocess.run([f'umount {self.OG_IMAGES_PATH}'], shell=True)
         self.refresh(ogRest)