fix

pillar_tool/__init__.py

@@ -2,6 +2,7 @@ from fastapi import FastAPI
 from starlette.middleware.authentication import AuthenticationMiddleware
 from starlette.requests import Request
 from fastapi.responses import HTMLResponse, PlainTextResponse
+from starlette.responses import JSONResponse
 
 from pillar_tool.middleware.basicauth_backend import BasicAuthBackend
 
@@ -22,4 +23,4 @@ async def root():
 @app.get("/pillar/<param>")
 async def pillar(param: str):
     print(param)
-    return None
+    return JSONResponse(content={})