Connect to FMC via SSH
to change the status to complete you need to execute the following commands
expert
sudo su
sudo su - lamplighter
mongo
use lamplighter
db.source.update({"version" : "1.0.0"},{$set:{"feedStatus" : "completed"}},{multi:true})
exit
exit
exit
exit
exit
exit
Browse your FMC (Intelligence –> Sources) and remove the formerly stuck on parsing sources