If your Phantom shows "Input isn't valid," "Invalid argument," "Invalid configuration," or "Not a valid URL," it means the data or setup doesn't match what the Phantom expects. The most common fix is to open the Phantom's setup, check that the input field contains the correct type of data (for example, a profile URL instead of a search URL), make sure all required fields are filled in, and verify that any URL is complete and starts with https://. Save and relaunch after correcting.
Why you're seeing this
Your automation may show one of these messages:
- "Input isn't valid"
- "Invalid argument" / "Your Phantom argument isn't valid"
- "Invalid configuration" / "Your Phantom configuration isn't valid"
- "Not a valid URL"
- Or a similar input or configuration message
All of these mean the same thing: The automation couldn't run because what it received doesn't match what it expected. The cause varies: Use the sections below to find your situation and fix it.
Your input format is wrong
The input you provided doesn't match what the Phantom expects. This is the most common cause of the "Input isn't valid" and "Your Phantom argument isn't valid" messages.
A typical example: The LinkedIn Profile Scraper requires LinkedIn profile URLs as input. If you accidentally provide a search URL instead, the Phantom will return an invalid input error.
The same applies if you provide a regular LinkedIn URL instead of a Sales Navigator URL where one is required.
How to fix a wrong input format
- From your PhantomBuster dashboard, open the Phantom's setup.
- In the Input step (e.g. Profiles to scrape), check what type of data is expected.
For example: A profile URL, a search URL, or a spreadsheet with a list of profile URLs/search URLs.
→ If you're unsure, find your Phantom in the Step-by-step Tutorials section and check the "What you give" section. - Make sure your input matches exactly what's required (e.g. a LinkedIn profile URL for the LinkedIn Profile Scraper).
- If you're using a Google Sheet as input, make sure it's shared correctly.
→ See How to Fix Google Sheets and File Access Errors. - Click Save & close and relaunch the Phantom.
If you're launching via API, n8n, Make, or Zapier and seeing this error, the cause is likely incorrectly formatted JSON or incorrectly filled in fields.
For example: When using PhantomBuster modules or events in Zapier or Make.
→ See How to Fix the "Your Phantom Argument Isn't Valid" Error for detailed guidance on API and integration setups.
Your Phantom configuration isn't valid
One or more required fields in your Phantom setup are missing or incomplete. This is different from providing the wrong input type, here the fields haven't been filled in at all.
If anything is missing, PhantomBuster will show a pop-up saying: "There are errors in the form but you can still save your progress."
Common causes include:
- A session cookie field left empty.
- A required HubSpot list or dropdown not selected.
- A required field skipped during setup.
How to fix missing configuration fields
- From your PhantomBuster dashboard, open the Phantom's setup.
- Review each step carefully and look for any required fields that are empty or incomplete.
- If a session cookie is needed, make sure your account is connected.
→ See How to Fix Session Cookie Expiration Errors. - If a list or dropdown is required, select the correct option.
- Save and relaunch the Phantom.
If you're unsure which fields are missing, check your execution log, PhantomBuster lists the exact missing properties there.
The URL you provided isn't valid
This error appears when the URL you provided in the input field can't be recognized by PhantomBuster.
For example: A truncated, incomplete, or malformed URL.
Common causes include:
- A copy-paste error that cut off part of the URL.
- A missing protocol (e.g. missing https://).
- A broken value passed from a spreadsheet or external tool.
How to fix an invalid URL
- From your PhantomBuster dashboard, open the Phantom's setup.
- Check the input field containing the URL.
- Make sure the URL is complete and correctly formatted. It should start with https:// and contain no extra spaces or characters.
- If the URL is coming from a spreadsheet or external tool, check the source for broken or truncated values.
- Save and relaunch the Phantom.
Frequently asked questions
What does "Input isn't valid" mean in PhantomBuster?
It means the data you provided doesn't match what the Phantom expects. For example, providing a LinkedIn search URL when the Phantom requires profile URLs, or passing a regular LinkedIn URL instead of a Sales Navigator URL.
What does "Your Phantom configuration isn't valid" mean?
It means one or more required fields in the Phantom setup are missing or incomplete, such as an empty session cookie field, an unselected dropdown, or a skipped required step. Open the setup and look for empty fields.
How do I find what input format my Phantom expects?
Open the Phantom's setup and check the Input step for a description of what's expected. You can also find your Phantom in the Step-by-step Tutorials section and look at the "What you give" section for the exact input requirements.
Why do I get an input error when launching via API or Zapier?
The cause is usually incorrectly formatted JSON or incorrectly filled fields in the integration module. See the dedicated guide on fixing "Your Phantom Argument Isn't Valid" for API and integration-specific troubleshooting.
If the error keeps showing up
If you've checked your input format, spreadsheet settings, or reset options and still see the error, get in touch with our Customer Care Team.
If possible, include:
- The name of the Phantom where you saw the error.
- A screenshot of your Input step setup (particularly if you're automating from Zapier, n8n, or a similar tool).
- A URL to the input you're using.
- The exact error message from your logs.