fix: different custom exception definition

because of encode/starlette#2391

exceptions.py

@@ -1,17 +1,2 @@
-from fastapi import Request, status
-from fastapi.responses import JSONResponse
-
-
 class NoProjectMembershipException(Exception):
     pass
-
-
-# pylint: disable=unused-argument
-async def no_project_membership_exception_handler(
-    request: Request,
-    exc: NoProjectMembershipException,
-):
-    return JSONResponse(
-        status_code=status.HTTP_403_FORBIDDEN,
-        content={"detail": "User does not have access to this project"},
-    )

main.py

@@ -1,14 +1,13 @@
 import os
 
 import sentry_sdk
-from fastapi import FastAPI
+from fastapi import FastAPI, Request, status
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import JSONResponse
 
 from api import config, connect, data, deployments, hdf5, infra, vms
-from exceptions import (
-    NoProjectMembershipException,
-    no_project_membership_exception_handler,
-)
+from exceptions import NoProjectMembershipException
+
 
 sentry_sdk.init(
     dsn=os.getenv("SENTRY_DSN"),
@@ -18,10 +17,6 @@
 
 app = FastAPI()
 
-app.add_exception_handler(
-    NoProjectMembershipException, no_project_membership_exception_handler
-)
-
 app.add_middleware(
     CORSMiddleware,
     allow_origins=os.getenv("CORS_ALLOWED_ORIGIN", "").split(" "),
@@ -37,3 +32,15 @@
 app.include_router(config.router)
 app.include_router(infra.router)
 app.include_router(hdf5.router)
+
+
+@app.exception_handler(NoProjectMembershipException)
+# pylint: disable=unused-argument
+async def no_project_membership_exception_handler(
+    request: Request,
+    exc: NoProjectMembershipException,
+):
+    return JSONResponse(
+        status_code=status.HTTP_403_FORBIDDEN,
+        content={"detail": "User does not have access to this project"},
+    )