Why does StorageManagement keep quitting whenever I want to look at storage?
Reindex the Spotlight Index by following these steps:


Choose Apple menu () > System Preferences, then click Spotlight.
Click the Privacy tab.
Drag the folder or disk that you want to index
again to the list of locations that Spotlight is prevented from
searching. Or click the Add (+) button and select the folder or disk
to add. 


To add an item to the Privacy tab, you must have ownership permissions for that item. To learn about permissions, choose Help from the Finder menu bar, then search for “permissions.”


From the same list of locations, select the folder or disk that you just
added. Then click the Remove (–) button to remove it from the list.
Quit System Preferences. Spotlight will reindex the contents of the
folder or disk.


From: https://support.apple.com/en-us/HT201716