CRM Card Development Completely Blocked (?)

Develop, Build & Integrate APIs & Integrations
1

URGENT PLATFORM BUG - CRM Card Development Completely Blocked

TESTED ON CLI VERSIONS:
- v5.2.0: FAILS
- v7.4.8 (latest): FAILS

Node Version: v22.15.0
Platform: macOS

ERROR (consistent across all versions):
“Source root cannot be a component. `/` should be in a non-source-root directory.”

ACCOUNTS AFFECTED:
- Sandbox
- Developer Test Account

PROJECT STRUCTURE TESTED:
- hsproject.json: “srcDir”: “src”
- src/app.json (valid)
- src/extensions/crm/cards/ (proper structure)
- Minimal test files

This is a SERVER-SIDE BUG affecting the build validation system.
Multiple CLI versions and accounts confirm this is NOT a client-side issue.

BLOCKING ALL CRM CARD DEVELOPMENT - NEED IMMEDIATE FIX

2

Are you sure you have the structure correct?

Looking at my own code, the examples at https://github.com/HubSpot/ui-extensions-examples and creating a new project results in the structure below:

/hsproject.json

/src/app/app.json <-- your app.json seems to be in the wrong location?

/src/app/extensions/ <-- your app files seems to be in the wrong location

/src/app/app.functions/ <-- your app files seems to be in the wrong location

/src/app/webhooks/

Your app files should be in the /src/app/ folder. Yours seem to be in the /src/ folder.

In my own app, if I move all the files and folders from /src/app/ to /src/, I get your error.