Troubleshooting

Common errors and how to recover.

This page covers the most common errors users hit and what to do about them. If you’re stuck on something not listed here, reach out via the Galileo support channels.

Account

Can’t sign in

You see Invalid email or password on the sign-in page.

Likely cause	What to try
Wrong password	Click Forgot your password? on the sign-in page to reset it.
Account doesn’t exist	Click Create account to create an account.
Typo in the email	Re-check the email — case matters in some setups.

If you reset your password but still can’t sign in, the reset email may not have arrived. Check spam, and confirm the email matches your Luna Studio account.

Integrations

Save changes button is disabled

The modal won’t let you submit.

Likely cause	Fix
A required field is empty	Fill in every field marked required.
JSON in a code-editor field doesn’t parse	The editor highlights the offending line. Common: trailing comma, smart quote.
Disclaimer switch isn’t toggled on	Some providers gate save behind the “I acknowledge…” switch.

Provider returns 401 / unauthorized

Validation passes when adding the integration but runs fail with provider auth errors.

Likely cause	Fix
Stale API key	Update the integration with a fresh key.
Wrong region (Azure / AWS)	Confirm the resource is in the region you specified.
Insufficient quota	Check your provider’s quota dashboard. Some providers return 429 instead of 401.

Datasets

Validation error: “Missing column”

You see Missing column "label" (or "input") after adding a dataset.

Likely cause	Fix
Column not in CSV/JSONL	Add the column to the file and re-add the dataset.
Column named differently	Rename to the literal input and label keys — Luna doesn’t auto-detect.

Validation error: “Could not fetch URL”

Luna couldn’t pull the file from the URL you gave it.

Likely cause	Fix
URL requires auth	For s3:// use AWS integration; for gs:// use Vertex AI with file uploads on.
URL returns 404	Open the URL in a browser to confirm it serves a file.
Content type unsupported	Re-host as .csv or .jsonl and use a direct link.

Generated dataset doesn’t look right

You ran Generate from test set and the samples are repetitive, off-topic, or mislabelled.

Likely cause	Fix
Test set seeds aren’t representative	Add more diverse rows to the test set, then regenerate.
Generation model too small	Switch to a larger available model from one of your configured providers.
Metric prompt is ambiguous	Clarify the prompt; click Regenerate with the “Provide own feedback” reason.

Register metric fails with duplicate name

The Galileo metrics store already has a metric with that name.

• Pick a different name in the Register metric modal.
• Or, delete the existing metric in the Galileo metrics store first, then register again.

Stuck in Queued

If a run sits in Queued for more than a few minutes, the most likely causes are:

• Heavy load. Luna provisions training capacity per region. Wait a few more minutes.
• Integration removed. If the integration backing the metric template was removed after launch, the run can’t allocate. Re-add the integration and launch a new run.

If neither applies, contact Galileo support.

Where to go next

FAQ

Common questions about how Luna Studio works.

Quickstart

End-to-end walkthrough.