# How to fix the warning " Warning: Constant UXPER\_... already defined in..."

<figure><img src="https://3379459016-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjTmig50QShTVy6X4kA%2Fuploads%2FjDypNx5aUZ6Nci1UYDDO%2Fimage.png?alt=media&#x26;token=f0d6a99d-2df1-441e-a4fc-da1c5c33bc3e" alt=""><figcaption></figcaption></figure>

To fix the error please deactivate the Uxper Crypto plugin or install the Uxper Crypto plugin version below:

<https://www.dropbox.com/s/s4fdbf5ohn2pynj/uxper-crypto.zip?dl=0>