The "ERR_CACHE_MISS" error typically occurs when the browser cache is cleared or disabled, and the browser is unable to load the page from cache. This can be caused by a number of factors, including a bug in the browser or the web app, a conflict with browser extensions, or a misconfiguration in the web app.
Here are some steps you can try to fix this issue:
Clear your browser cache and cookies: In your browser settings, clear your cache and cookies and try reloading the web app.
Disable browser extensions: Some browser extensions can interfere with web apps. Try disabling any extensions you have installed and see if the error still occurs.
Try a different browser: If the error persists, try using a different browser to see if the problem is specific to your current browser.
Check your code: Make sure your code is correct and that you are not inadvertently causing the error. Use the browser's developer tools to check for errors in your code and to see if there are any issues with your network requests.
Check the Google Apps Script documentation: Make sure you are following best practices and that your code is compatible with the latest version of Google Apps Script. Check the documentation and forums for any known issues or workarounds.
If none of these steps resolve the issue, you may need to seek further assistance or consult with a developer.