Error on installing app ("There’s no page at this address, Check the URL and try again, or use ...")

[SteveTT]

Hi,

I'm installing my test app on my development store:

Test your app -> Select Store -> install app -> install unlisted app

On installation,  I get:

!

There’s no page at this address

Check the URL and try again, or use the search bar to find what you need.

However (in the store admin page) when I click on Apps -> <my app icon>, I get to the App URL defined in App setup with no errors.

I believe authentication was working as Allowed redirection URL did not raise any errors, even webhook for app uninstall seems to work.

So what was that "error page" about and how do I stop that from happening?

The error looks just like this one:

https://community.shopify.com/c/Shopify-Apps/Order-Printer-App-installation/m-p/1169980#M36231

Of course, my app has nothing to do with the one mentioned there. FYI I've tried clearing cookies, using latest Chrome.

Thanks!

[SteveTT · Accepted solution]

The error is that I was that on successful app installation, I was redirecting to my shop's admin app page using the app's name with some characters as UPPER case.

Changed to lower case, (app name spaces must be replaced with '-'), ok now.