Solution "Unchecked runtime.lastError: Could not establish connection. Receiving end does not exist"

They recommended that I uninstall my extensions but it didn't work until I tried delaying the content script call with async await.

chrome.runtime.onConnect.addListener( (port) => {

  port.onMessage.addListener(async ({ cmd }) => {
    if (cmd === "start") {
      const [tab] = await chrome.tabs.query({
        active: true,
        currentWindow: true,
      });
//Here called script to the content
      let port = **await** chrome.tabs.connect(tab.id, { name: "bg-content_script" });
      port.postMessage({ cmd: "scrap" });
    }
  });
});

........................................

Via Active questions tagged javascript - Stack Overflow https://ift.tt/2tQZWUK

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