Im currently working SEO for a website and I’m having issues with typos in the URL’s. For example product/index.php would return a 404 despite being correctly redirected to the correct website.

I believe this is because / is illegal in URL’s and thus, it’s rewritten to product//index.php which is then redirected correctly but product/index.php would still return a 404 code. Is there any way i could fix the product/index.php without the browser transforming it to product//index.php?