Deployment Failure Reason: An unknown error has occurred.

I've created SWA resource in Azure, and connected it to my GitHub repo, where it created the deployment workflows. I started out trying a deployment without an api-location, and that worked fine. I then moved my Azure Function code from it's separate repo into an `api/` folder and pointed the api-location to the path for the functions project and retried deployment. This time it fails with an unknown error while trying to deploy the Azure Function.

```
Function Runtime Information. OS: Windows, Functions Runtime: v3, .NET Core version: 3.1
Finished building function app with Oryx
Zipping App Artifacts
Done Zipping App Artifacts
Zipping Api Artifacts
Done Zipping Api Artifacts
Uploading build artifacts.
Finished Upload. Polling on deployment.
Status: InProgress. Time: 0.2428578(s)
Status: InProgress. Time: 15.4844796(s)
Status: InProgress. Time: 30.8256391(s)
Status: InProgress. Time: 45.9461007(s)
Status: InProgress. Time: 61.1216657(s)
Status: InProgress. Time: 76.2432086(s)
Status: Failed. Time: 91.581539(s)
Deployment Failed :(
Deployment Failure Reason: An unknown error has occurred.
```