DRF with JS Framework retrieving state from URL and making request gets page not found

I'm new in Django. I worked with PERN and PEAN stack before. So, let's say I have product page which stores page state in a URL, and retrieves it when reloading, then makes request to backend, to "product/getOne". But, this works only for first time when actually gets it from link state. Then, when I reload I'm getting Page Not Found Error, and my URL looks like this. Why current path is matter if my request defined like "product/getOne" in my client? enter image description here

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