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When running maestro test --headless tests/test-suite.yaml an error of Want to use 0 devices, which is not enough to run 1 shards. Missing 1 device(s). [\n] Not enough devices connected (1) to run the requested number of shards (1).

The issue arose after converting a hardcoded URL value to an environment variable. The issue persists with all methods of passing params / env variables to yaml files, including -e flag.

Reproduction
Test script setting the env:

#!/bin/bash

export MAESTRO_URL="https://example.com"
maestro test --headless tests/test.yaml

Test file:

url: ${MASTRO_URL}
---
- launchApp

Expected result

Open and run tests in the browser (Chromium).
NOTICE: If the ${MASTRO_URL} is changed to https://example.com the test suite runs without error.

Conclusion
Environment variables do not work currently in the web beta due to a bug.

Issue Logs and CLI version
2025-07-17_160048.zip
2025-07-17_160052.zip
2025-07-17_160103.zip
2025-07-17_160314.zip
2025-07-17_160420.zip
2025-07-17_160528.zip

❯ maestro -v
1.41.0