Mac Console log flooded by devonbot

I’m getting many error messages per second like the following. What does it mean and what should I do to fix it?

3/11/14 11:28:22.003 AM devonbot[1360]: No UTI: /Users/dbg/Library/Mail/V2/IMAP-dbgusta … .gmail.com/[Gmail].mbox/All Mail.mbox/49598256-28EF-4533-B636-1E7E2433AEE5/Data/5/5/3/2/Messages/2355149.emlx
3/11/14 11:28:22.004 AM devonbot[1360]: No UTI: /Users/dbg/Library/Mail/V2/IMAP-dbgusta … .gmail.com/[Gmail].mbox/All Mail.mbox/49598256-28EF-4533-B636-1E7E2433AEE5/Data/5/5/3/2/Messages/2355150.emlx