title: How do I set (change) the language for Google Stackdriver error messages?
body: <p>I am debugging (what started as) a legacy add-on for Forms (migrated from the Chrome Web store, but now has its own Google Cloud Project) that was created by a colleague who speaks French. I'm testing it using the <a href="https://developers.google.com/gsuite/add-ons/how-tos/testing-editor-addons" rel="nofollow noreferrer">Test as add-on...</a> feature.</p>
  
  <p>The Stackdriver messages are showing up in French, e.g.:</p>
  
  <pre><code>2020-02-03 14:43:13.294 EST
  Vous ne disposez pas de l'autorisation nécessaire pour effectuer cette action. at onOpen(Code:26)
  </code></pre>
  
  <p>Although I'm able to understand the error, I'm wondering how it got set to be French and how I can change it to English? Where is the setting for the locale (language) of Stackdriver errors? I could not find anything obvious in console, script, or the Google document containing the script. My Google locale (for my accounts) is set to English. </p>
  
  <p><strong>Edit:</strong> This is a Forms add-on, and there is no API that I could find to do something like <code>setSpreadsheetLocale()</code>. For this reason, it is not a duplicate of <a href="https://stackoverflow.com/questions/21467261">How to change Google Apps Script locale?</a>.</p>
  
  <p><strong>Edit2:</strong>  I created a new Google Form and a new "script" with <code>clasp create ...</code> and pushed all the same files. The errors are now in English. My assumption is that the locale is "stuck" to the script project. I can see no way to change it.</p>