Raise PermissionError if access_token not available on auth_token object (microsoft#2138)

skoryky · web-flow · commit cea5ccc784b7 · 2024-07-16T15:23:22.000-05:00
diff --git a/libraries/botframework-connector/botframework/connector/auth/microsoft_app_credentials.py b/libraries/botframework-connector/botframework/connector/auth/microsoft_app_credentials.py
@@ -52,7 +52,12 @@ def get_access_token(self, force_refresh: bool = False) -> str:
         if not auth_token:
             # No suitable token exists in cache. Let's get a new one from AAD.
             auth_token = self.__get_msal_app().acquire_token_for_client(scopes=scopes)
-        return auth_token["access_token"]
+        if "access_token" in auth_token:
+            return auth_token["access_token"]
+        else:
+            error = auth_token["error"] if "error" in auth_token else "Unknown error"
+            error_description = auth_token["error_description"] if "error_description" in auth_token else "Unknown error description"
+            raise PermissionError(f"Failed to get access token with error: {error}, error_description: {error_description}")
 
     def __get_msal_app(self):
         if not self.app:
