> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# File Open

## File Open

### About the error

**Issue:** Failed to open the specified file.

**Cause:**

* nTop encountered an error when attempting to read from the specified input file. This can happen when the path does not exist on the current machine (for example, when running a notebook created on a different machine) or when you do not have permission to read the specified file.

**Solution:**

* Verify the file exists and that you have permission to read it.

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