App Bridge Error: INVALID_CONFIG: host must be provided

Shopify Apps

Topic summary

A developer is encountering an App Bridge configuration error when their embedded Shopify app launches for the first time. The error message states “INVALID_CONFIG: host must be provided.”

Current Behavior:

  • Error occurs only on initial app launch
  • App loads correctly after page refresh
  • Connection establishes successfully on subsequent loads

Technical Details:

  • Using App Bridge version 3.7.7
  • Using App Bridge React version 3.7.7
  • Screenshot provided showing the error

Status: The issue remains unresolved with no responses or solutions posted yet. The intermittent nature (working after refresh) suggests a potential initialization timing issue with the host parameter.

Summarized with AI on October 30. AI used: claude-sonnet-4-5-20250929.
1

Hello, I’m facing “host must be provided” issue when my embedded shopify app is launched for the first time. On refresh, the connection is established, and the app loads correctly.

Screenshot 2025-03-31 at 11.10.35 AM.png
Screenshot 2025-03-31 at 11.10.35 AM.png2620×300 60.7 KB

App Bridge Version:

“@shopify/app-bridge”: “^3.7.7”,
“@shopify/app-bridge-react”: “^3.7.7”,