Object got unstuck from printing mat
You have to secure your print to the build plate.  

One thing that I always do is to use a brim in cura.  prints a single layer which extends in all direction away from your object, adding extra adhesion between your object and the print bed.

You can also use a slower extrusion speed for your initial layer but I would use this after trouble shooting everything else since you will be adding time to each print.

If you are using a heated bed make sure that the temperature is set for the correct material.  For PLA i think that is 40C-60C.

We put down a layer of craft/school elmers stick glue before most prints.  This helps a bit with adhering to the build plate, and also seems to allow the prints to pop off a bit easier. 

Also be sure to double check you Z calibration and your bed level.  If there are inconsistencies and your nozzel moves to far away from you bed, you will be extruding in air and not getting and stickage at all.