app can not open when start a existing app

Topic summary

New developer tries to run an existing Shopify app locally using the Shopify CLI command “shopify app dev” and opens the preview URL. Instead of the app loading, they are redirected to the store’s Settings page where an “Open app” option appears (details shown in screenshots). They ask if any setup steps were missed.

Key context:

  • “shopify app dev” is used to serve the app locally and generate a preview URL for testing in a dev store.
  • Screenshots are provided to show the unexpected redirection/UI state.

Latest update: Another participant asked whether the issue was resolved and how, but no solution or steps were shared.

Outcome/status: No resolution or guidance provided yet; the thread remains open with unanswered questions about required setup steps to properly open the app from the preview URL.

Summarized with AI on December 15. AI used: gpt-5.

hi ,i’m new developer to shopify app ,i’m studying a existing app,and i use command shopify app dev ,when i open the preview url,i jump into settings page and realiase that i have the open app option

so ,did i miss some steps?thanks

Did you manage to fix the issue? If so, how?