Google has no solution at the moment but recommended a workaround for the time mean:

For Macs: 
 
 Select "Quit Google Drive" from the sync client menu. 
 In Finder select "Go" --> "Go to Folder...". 
 Enter this, exactly: 
   ~/Library/Application Support/Google/Drive 
 Open the folder titled "cloud_graph". 
 Delete the file titled "dict_2.db". 
 Restart the desktop sync client. 
 
For PCs: 
 
 Select "Quit Google Drive" from the sync client menu. 
 Select "Choose File", and navigate to: 
   %UserProfile%\AppData\Local\Google\Drive 
 Open the folder titled "cloud_graph". 
 Delete the file titled "dict_2.db". 
 Restart the desktop sync client."

Difficulty level: Easy
Recurring Risk: No

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