Chrome.tabs.sendMessage is not sending a message to content script - google-chrome-extension

Question

I have looked at a lot of different posts about using execute script and send message to execute the content script on a specified tab, but it doesn't execute the content script until I do a hard refresh and then the response from the content script is successful. Attached below is the call back function for button clicked this is in a popup.js file.
function buttonClicked() {
// Get an object for the active tab
console.log("print dymo has been clicked");
chrome.tabs.query({active: true, currentWindow: true}, function(tab_array){
// send a messege to the contentscript that will then scrape the web
// it will then call the popup.js receiveURL() method with the url it makes
console.log("Messege sent to conntent script");
alert("print has been clicked")
alert(tab_array[0].id)
chrome.tabs.sendMessage(tab_array[0].id, {getHTML: true}, receiveURL);
});
Content Script:
chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
// When there is a request (that will come in as true)
if (request) {
/*********************************************************************
IF YOU NEED TO CHANGE THE WEB SCRAPER START HERE
**********************************************************************/
// Take out everything in the html before the tag "<label>Job:</label>"
// Selects only the inner elements between the style row
var matches = document.querySelectorAll('ul.list-unstyled')
//Gives us the inner text of the elements of information
//Gives us an array of all the information split up by new lines
information = matches[1].innerText.split(/\r?\n/)
//Iterate ansd store everything in a dictionary split by a :
var dict_info = {}
for (index = 0; index < information.length; index++) {
parts = information[index].split(": ")
ans = ""
for(i = 1; i < parts.length; i++) {
ans += parts[i]
}
dict_info[parts[0]] = ans
}
var name = dict_info['Requestor']
var job = dict_info['Job']
if (job != undefined) {
job = job.match(JOB_REGEX)[1]
}
var request = dict_info['Request']
if (request != undefined) {
request = request.match(REQ_REGEX)[1]
}
var file = dict_info["File"]
if (file.length > 10) {
file = file.substring(0,file.length-9)
}
if (file.length > 20) {
file = file.substring(0, 20)
}
var email = dict_info['Requestor Email']
var cost = dict_info['Estimated Cost']
if(cost == undefined) {
cost = dict_info['Cost']
}
if (cost != undefined) {
cost = cost.match(COST_REGEX)[1]
}
name = name.split(" ")
name = name[0] + "/" + name[name.length-1]
var url = "https:// test"
sendResponse(url);
return true;
}
}
);