first unplug the printer from power and wait for 1 min than restart the printer .
please don’t pull the paper out from a jam in the opposite direction this will create more issues .
just go check to make sure there is no loose paper stuck in loading tray .
you can also take out paper roller and clean paper roller using a cotton cloth .
for more steps visit [https://goo.gl/mmGCE3|How to fix-paper-jam-printer] .
after all steps consider restarting the devices (printer , computer , and router )
thanks