How can we fix "Invalid Bundle Structure" error when submitting to app store

Hi, We have our project.yml file configuration as below:

dependencies:
- sdk: libABC.a
link: true

When we submit the build to app store, it gives us the following error:

Invalid Bund Structure - The binary file libABC.a is not permitted. Your app can't contain standalone executables or libraries, other than a valid CFBundleExecutable of supported bundles. Refer to the Bundle Programming Guide for information.
What kind of changes should we make in project.yml to fix this?
We found a similar issue on stackoverflow, just not sure what are the exact changes needed.
https://stackoverflow.com/questions/20251252/invalid-bundle-structure-the-app-may-contain-only-one-executable-file#:~:text=This%20error%20occurs%20when%20a,Copy%20Bundle%20Resources%20build%20phase.
Thanks!

Start with the project.yml dependencies entry and inspect the generated Xcode project and build phases to determine why libABC.a is included in the app bundle. Compare the generated bundle with the referenced Bundle Programming Guide, then verify the corrected configuration by rebuilding and submitting to the App Store without the Invalid Bundle Structure error.