# How to Fix xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools)

Gm! I trust you all are fine; it's a bug fix.

## Problem

I ran into an issue on my Mac OS when installing a blockchain project using the Cosmos SDK, which runs on top of the Tendermint Core consensus engine.

After running the following command:

```typescript
make install
```

I ran into the error as shown below:

> xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/us

Please don't panic; you will learn how to fix it quickly.

## How to Fix the Error

To fix this error, open the terminal, and run the following command:

```typescript
xcode-select --install
```

Why do we need to do this? The problem is that one needs to agree to the license agreement explicitly.

You may get an error message: "Can't install the software because it is not currently available from the Software Update server."

In this case, run the following command `xcode-select --reset`

## Conclusion

It takes a couple of minutes to resolve this issue might be an hour for you; I hope you will fix it in less than 2 minutes.

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