Cannot retrieve previous editions of excel document that is shared with multiple users (365)

Dear All,

At work we have a document that is uploaded in Onedrive and is worked by 5 colleagues at the same time (365). We have been using it for more than 6 months with no issues so far. 

Today we came upon something really strange. Some part of the data were missing and when we tried to retrieve previous editions of the document (version history) in order to see what happened we cannot. For all recorded changes, the following message pops up: "Sorry, we couldn't open 'https//xxxxx-my.sharepoint.com [...]'

Is there a reason for that?

Can something be done?

Best regards,

Manolis Liveris