Is this your first bill?

Can you try to clear the cache of the web browser or use the incognito/invisible mode to see if that can help?

@LeannaGoebel This error typically has to do with one web browser version. The below is what Google recommends as a fix:

How to Fix the “Application error: a client-side exception has occurred” Error in Safari

To resolve the “Application error: a client-side exception has occurred”, you can try one of the following tricks to troubleshoot the error and get things working again.

• Clear the browser cache, cookies, and site data for the specific URL displaying the error
• Disable content blocking browser extensions or plug-ins
• Update the web browser to a newer version
• Temporarily disable JavaScript and reload the web page throwing the error message
• Use a different web browser and access the web site again

The latter trick, using a different web browser, is often the easiest immediate solution. For example, if you experience the “Application error: a client-side exception has occurred” error message on Safari on an iPhone, iPad, or Mac, you may try using the Chrome web browser available for those same devices, and accessing the website or web app again with Chrome.

We hope it helps.