structuredAttrs is enabled trying https://files.pythonhosted.org/packages/dd/3a/764912c58293d95b6dcdf4cc255f9d10de310580ced547b082eb9d72018c/sse_starlette-3.4.8-py3-none-any.whl % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 0 100 16516 100 16516 0 0 506.5k 0 0 100 16516 100 16516 0 0 505.6k 0 0 100 16516 100 16516 0 0 505.2k 0 0