React Router or Netlify does not route wisdp.com/services when that address is requested in the browser

**Describe the bug**
Page Not Found error on URIs such as /services

**To Reproduce**
Steps to reproduce the behavior:
1. Go to wisdp.com/services
2. See Page not Found Netlify Error

**Expected behavior**
website routes to /services

**Screenshots**
https://ibb.co/gyswFt9 - Screenshot of not found page

**Desktop (please complete the following information):**
- Vivaldi | 3.4.2066.106 (Stable channel) (64-bit)
- Revision | 9faa7da6e287d30fe3948ac5d9d62aefe7977da5
- OS | Linux
- JavaScript | V8 8.6.395.25
- Flash | (Disabled)
- User Agent | Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36

**Additional context**
Might have to do with the site being served statically... but should have a way to get around this bug even in netlify. Maybe is a react router or netlify issue.

Beginne damit, die direkte Browser-Anfrage an wisdp.com/services zu reproduzieren, und untersuche anschließend das React Router-Setup und die Netlify-Konfiguration für das statische Ausliefern. Die Arbeit ist abgeschlossen, wenn /services erfolgreich geladen wird, anstatt einen Netlify Page Not Found-Fehler anzuzeigen.

Vom Indexierungsmodell aus dem Issue-Text verfasst.