Playwright: browserType.launch (executable doesn't exist)

Quick fix

Read the commands before running them. Anything that restarts a service, deletes data or changes permissions should be tried on a non-production system first.

# Install browsers (and Linux system dependencies)
npx playwright install --with-deps

# Only what you need
npx playwright install chromium --with-deps

# In Docker, use the official image so versions always match
FROM mcr.microsoft.com/playwright:v1.50.0-noble

# Browsers live outside node_modules. Cache this path in CI
# ~/.cache/ms-playwright

How to diagnose Testing errors

Test errors divide into infrastructure problems (the framework cannot find or load your tests, fixtures or modules) and flakiness, which is the more expensive category. End-to-end timeouts are almost always a race between the test and the application, and the durable fix is to wait for a condition (an element, a network response, a state change) rather than for a duration.

If the quick fix above does not resolve it, work through these steps. They apply to this whole class of error, not just to this one message, which is usually what saves the time.

1. Run a single failing test in isolation. If it passes alone but fails in the suite, you have shared state or test ordering dependence.
2. For Cypress and Playwright timeouts, use the trace viewer or video to see what the page actually showed. The element usually exists but is covered, detached, or not yet interactive.
3. Replace fixed waits with condition-based waits. waitForSelector and auto-retrying assertions eliminate an entire class of flakiness.
4. For collection and module-resolution errors, check the framework's rootDir/testPaths configuration and the presence of __init__.py or conftest.py where the framework expects it.
5. Review snapshot diffs rather than updating them reflexively. A changed snapshot is sometimes a real regression.

Tools worth reaching for

• playwright show-trace
• pytest -x -vv --tb=long
• jest --runInBand
• cypress open
• test retry analytics

Authoritative references

Primary documentation for this error, worth reading before applying any fix in production.

📖 playwright.dev

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See all 18 Testing errors →

Browse other categories

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• AI 35Rate limits, context windows, GPU memory and model-serving failures.
• Network 35Refused connections, timeouts, resets, MTU problems and port exhaustion.
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• Kubernetes 34CrashLoopBackOff, ImagePullBackOff, OOMKilled, RBAC, scheduling and storage.
• Docker 27Daemon connectivity, disk space, image pulls, ports and architecture mismatches.
• System 26Disk space, systemd units, file descriptors, OOM killer and scheduled jobs.
• Cloud 25IAM permissions, quotas, service limits and credential failures.
• Security 25JWT validation, CSRF, OAuth grants, SELinux, SSH host keys and CSP.
• TLS 24Untrusted authorities, expiry, hostname mismatch, chains and cipher negotiation.

Something missing or wrong?

This entry is maintained by hand. If the fix is out of date, incomplete, or you have a better one, email a correction and it will be reviewed.