lower name space

app.py

@@ -316,7 +316,7 @@ async def home(request: Request, search: Optional[str] = None, tag: Optional[str
                     and HF_USERNAME
                     and os.environ.get("ENV", "development") == "production"
                 ):
-                    embed_url = f"https://{HF_USERNAME}-{SPACE_NAME}.hf.space/static/uploads/{file.name}"
+                    embed_url = f"https://{HF_USERNAME.lower()}-{SPACE_NAME}.hf.space/static/uploads/{file.name}"
                 else:
                     embed_url = f"{request.base_url}static/uploads/{file.name}"