Failed to execute 'send' on 'XMLHttpRequest':

[Luis Esteves]

I'm hoping someone can help me out with an odd issue I'm having with Selenium IDE. 

I'm attempting to create an API test using XMLHttpRequest. It works as expected unless there is an OPEN command in the script prior to the EXECUTE SCRIPT command. When another page is opened prior to the API call, I always get the error:

Failed to execute 'send' on 'XMLHttpRequest': Failed to load 'https://www.mywebsite.com/api/v1/test'.

It works perfectly if I split it into two separate tests in the same SIDE file; one for the required open where some info is collected and saved in variables and another separate test for the API call which uses those variables. Unfortunately, this is supposed to run in Oracle Cloud and their synthetic testing does not currently support SIDEs with multiple tests. 

Here is the gist of what I am doing...

store
  https://www.mywebsite.com/api/v1/test
URI 

store
  1684245830
EPOCH

store
  6keD+b6jbFs2bqbJn6Rln+BM.......
AUTH

execute script
  var REQUEST = new XMLHttpRequest();
  REQUEST.open("GET",${URI},false);
  REQUEST.setRequestHeader("Access-Control-Allow-Origin", "*");
  REQUEST.setRequestHeader("Access-Control-Allow-Methods", "GET");
  REQUEST.setRequestHeader("Timestamp", ${EPOCH});
  REQUEST.setRequestHeader("Authorization", ${AUTH});
  REQUEST.send();
  return REQUEST.status;
RESPONSE_CODE

Those 3 store and 1 execute script commands will run perfectly by themselves but break if a page is opened first. Anyone know why this happens? 

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