"Error: We're sorry, a server error occurred. Please wait a bit and try again." when getting screenshot of the webpage using Google Apps Script

Question

following my previous question, I wanted to get the screenshot of the webpage using Google Apps Script, thanks to Tanaike for the proposed script, it can get the webpage as required. However, after running the script for few times, I started to encounter the error saying: Error: We're sorry, a server error occurred. Please wait a bit and try again

After every run, I need to check the script whether it ran successfully or not, which is not suitable in my case. Following is the proposed script:

function getScreenShot() {
  const url = "https://pagespeed.web.dev/report?url=http://www.cool.haus"; // This URL is from your question.

  const blob = Charts
    .newTableChart()
    .setDataTable(Charts.newDataTable().addColumn(Charts.ColumnType.STRING, "").addRow([`<meta http-equiv="refresh" content="0; URL='${url}'">`]).build())
    .setOption('allowHtml', true)
    .setDimensions(1000, 2000)
    .build()
    .getBlob();
  DriveApp.createFile(blob.setName("sample.png"));
}

This is the eror which I receive when running the function from script editor: I found the following sources (link1 , link2) which also addresses the same issue, any help to solve this issue would be greatly appreciated. Thank you.

Answer 1

I could confirm your situation. In this case, how about retrying the request? When this is reflected in your script, it becomes as follows.

Modified script:

function getScreenShot() {
  const url = "https://pagespeed.web.dev/report?url=http://www.cool.haus"; // This URL is from your question.

  let blob;
  let retry = 3;
  let n = 1;
  while (n <= retry && !blob) {
    console.log(`Try: ${n}`);
    try {
      blob = Charts
        .newTableChart()
        .setDataTable(Charts.newDataTable().addColumn(Charts.ColumnType.STRING, "").addRow([`<meta http-equiv="refresh" content="0; URL='${url}'">`]).build())
        .setOption('allowHtml', true)
        .setDimensions(1000, 2000)
        .build()
        .getBlob();
    } catch ({ message }) {
      console.log(message);
      Utilities.sleep(5000); // This might not be required to be used.
    }
    n++;
  }
  if (!blob) {
    console.log("Image blob couldn't be retrieved.");
    return;
  }
  DriveApp.createFile(blob.setName("sample.png"));
}

• When this script is run, when an error occurs, the script is retied. When the image blob is retrieved, the retry is finished. In this case, the sample number of retries is 3. And, in this sample script, you can see the process in the log.