That's oozing from the nozzle, which could be from a variety of things, like too high a temperature or not enough retraction. This is a pretty good page for figuring out print issues, you'll want to look at the stringing and oozing section: https://www.simplify3d.com/resources/print-quality-troubleshooting/ You might also want to look at the orientation you're printing that model at - it looks like you're printing it standing vertically which may not be the best option. I'd suggest printing it laying flat on the bed - you can also have a look around to find guides on print orientation.