Allow Synchronous Calls in Chrome

How to Change Settings (Allow Synchronous Calls) in Google's Chrome Browser

Check the Chrome version you are currently running (chrome://settings/help). If you are below Release 80, this is not applicable. If you are running Chrome Release 80 or higher, look at the Chrome flags that allow synchronous XHR requests in page dismissal with this link: chrome://flags/#allow-sync-xhr-in-page-dismissal
Change this value to “Enabled” to allow synchronous calls, mimicking the Chrome behavior prior to Release 80. The values Default or Disabled blocks the synchronous calls.