You can find errors by following these steps:
1. Go to the required page (the page that caused the error) and click on the Right Mouse Button.
2. Then click on "Inspect". Alternatively, ou can also press on the F12 key to open developer tools in your browser.
3. Click on "Network"
4. Now, take the action that caused the error (e.g. send the invite).
5. If there is an error message, it will be shown here in red name. You have to click on the Error to view the issue.
Please remember to select "All", if no error line is being shown.
6. Now, please click on "Response".
7. Please give a screenshot of the error to the support team.