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Any ideas how I can understand what triggers this issue?
```(node:5747) UnhandledPromiseRejectionWarning: Error: Program run without the Pulumi engine available; re-run using the `pulumi` CLI
    at requireTestModeEnabled (/node_modules/@pulumi/pulumi/runtime/settings.js:123:15)
    at Object.getMonitor (/node_modules/@pulumi/pulumi/runtime/settings.js:214:13)
    at /node_modules/@pulumi/pulumi/runtime/invoke.js:123:40
    at Generator.next (&lt;anonymous&gt;)
    at fulfilled (/node_modules/@pulumi/pulumi/runtime/invoke.js:18:58)
    at processTicksAndRejections (internal/process/task_queues.js:93:5)```

after enabling / disabling modules, I did found which one was causing the issue… is it possible to give much better stacktrace, what exactly did run program?

Usually you would only see this error if you are running a pulumi program (ie one that makes SDK calls like `new aws.s3.Bucket(...)`) either without the CLI, or without calling `stack.up` in automation api.