Error Saving When Using 'Organise Pages'

New Here ,

I am having trouble saving certain documents after re-arranging them using the 'Organise Pages' feature. It looks like it tries to load but at the last stage it fails to save and the below error appears. Error says 'something went wrong and we couldn't save your file. please try again'

I have tried making a copy of the document and trying again but no effect.

This also doesn't affect every document

I have used this feature many times before.

For clarity, this running via Windows Server 2016 Datacentre