Error cropping image

I always get an error when trying to crop a header image.

Repro steps:
I click on one of my content pages
I click 'customize’
I click through to 'header image’
I click on 'add new image’
I select am image
I click 'select and crop’
I then try to crop my image and an error message appears; ‘There has been an error cropping your image’

The images I’m using are the recommended dimensions.

Any suggestions ya’ll?

Hello there,

Thank you for reporting.

I’m afraid that this issue isn’t produced by our theme. I thought it relates to the hosting configuration. I’d suggest you to contact your host to make sure if it supports the PHP GD Library.

Warmest regards,