My backed up desktop folders disappeared from my computer and are only on the Dropbox cloud

Hi everyone -

 

have had Dropbox for a while, and have had specific files from my Macbook back up to Dropbox (my documents file and my desktop). When I used the laptop last night everything was located on my Macbook and in Dropbox where it should be. This afternoon, came home from work and I have nothing on my desktop anymore (all files, folders, etc) and my entire My Documents folder are gone from the Macbook but are in Dropbox. Anytime I create a new file on the desktop it disappears into the dropbox cloud. There are sync issues identified, and I can't fix them because Dropbox can't find the files in their original location...not sure what to do or how to fix. I want all the files in both places, not just in the cloud on Dropbox. Any help appreciated. Thanks!