Treat errors for load config from env and tests for it

dashboards/upload.py

@@ -58,6 +58,12 @@ def load_config_from_env(env_path: str = ".env") -> Tuple[str, str]:
         dotenv.load_dotenv(env_path)
     grafana_api_key = os.getenv("GRAFANA_API_KEY")
     grafana_server = os.getenv("GRAFANA_SERVER")
+
+    if not grafana_api_key:
+        raise ValueError("GRAFANA_API_KEY is None or not defined in the .env file")
+    if not grafana_server:
+        raise ValueError("GRAFANA_SERVER is None or not defined in the .env file")
+
     return grafana_server, grafana_api_key
 
 
@@ -65,3 +71,4 @@ def upload_dashboard(dashboard: Dashboard, folder: int) -> None:
     grafana_server, grafana_api_key = load_config_from_env()
     dashboard_json = get_dashboard_json(dashboard, overwrite=True, folder=folder)
     upload_to_grafana(dashboard_json, grafana_server, grafana_api_key, verify=False)
+