volume does not exist

I’ve been using Libre Office for 2 years without problem
Today i got error message when trying to open any document that the volume does not exist. I get an ok button and then cannot open any document

Libre Office

Your question does not give us much information to work on. What OS are you using? How are you trying to open files? Where are the files that you are trying to open - perhaps a networked storage as the error message suggests?