Build problem "personal stage name"

I would appreciate help solving the build process that are failing?
Anyone?
The app is an AWS serverless app.

“netlify site name meek-entremet-0197ce”

“9:52:20 AM: Netlify Build
9:52:20 AM: ────────────────────────────────────────────────────────────────
9:52:20 AM: ​
9:52:20 AM: ❯ Version
9:52:20 AM: @netlify/build 29.15.1
9:52:20 AM: ​
9:52:20 AM: ❯ Flags
9:52:20 AM: baseRelDir: true
9:52:20 AM: buildId: 64a6728e1f5d0a0008bf0ffb
9:52:20 AM: deployId: 64a6728e1f5d0a0008bf0ffd
9:52:21 AM: ​
9:52:21 AM: ❯ Current directory
9:52:21 AM: /opt/build/repo
9:52:21 AM: ​
9:52:21 AM: ❯ Config file
9:52:21 AM: No config file was defined: using default values.
9:52:21 AM: ​
9:52:21 AM: ❯ Context
9:52:21 AM: production
9:52:21 AM: ​
9:52:21 AM: Build command from Netlify app
9:52:21 AM: ────────────────────────────────────────────────────────────────
9:52:21 AM: ​
9:52:21 AM: $ yarn sst build
9:52:21 AM: yarn run v1.22.19
9:52:21 AM: $ /opt/build/repo/node_modules/.bin/sst build
9:52:23 AM: Please enter a name you’d like to use for your personal stage. Or hit enter to use buildbot: Done in 1.93s.
9:52:23 AM: ​
9:52:23 AM: (build.command completed in 2.1s)
9:52:23 AM: ​
9:52:28 AM: Failed during stage ‘building site’: Build script returned non-zero exit code: 2 (Search results for '"non-zero exit code: 2"' - Netlify Support Forums)
9:52:28 AM: Build failed due to a user error: Build script returned non-zero exit code: 2
9:52:28 AM: Failing build: Failed to build site
9:52:29 AM: Finished processing build request in 37.453s”

I’m unfamiliar with your stack, but the error appears to be this. Not sure what it means, but you can try searching online, or asking the developers of your tool.