fix http exceptions

src/main.py

@@ -142,20 +142,20 @@ def update_podcast_image(
 
     if image is not None and image.size > 0:
         if not (image.filename.endswith(".jpg") or image.filename.endswith(".png")):
-            return HTTPException(
+            raise HTTPException(
                 400, detail="The uploaded podcast image must be a jpg or png"
             )
 
         im = Image.open(image.file)
 
         if im.size[0] != im.size[1] or im.size[0] < 1400 or im.size[0] > 3000:
-            return HTTPException(
+            raise HTTPException(
                 400,
                 detail="The uploaded podcast image must be square and between 1400x1400px and 3000x3000px in size",
             )
 
         if im.mode != "RGB":
-            return HTTPException(
+            raise HTTPException(
                 400, detail="The uploaded podcast image must be in RGB format"
             )
 
@@ -489,7 +489,7 @@ def get_episode_or_cover(session: SessionDep, podcast_id: str, filename: str):
     ) and filename == podcast.image_filename:
         return FileResponse(settings.directory / podcast.image_filename)
 
-    return HTTPException(status_code=404, detail="File not found")
+    raise HTTPException(status_code=404, detail="File not found")
 
 
 @app.get("/{full_path:path}")
@@ -497,7 +497,7 @@ async def serve_app(full_path: str):
     if not full_path.startswith("api/"):
         return FileResponse("dist/index.html")
 
-    return HTTPException(status_code=404, detail="Not found")
+    raise HTTPException(status_code=404, detail="Not found")
 
 
 use_route_names_as_operation_ids(app)