Whitelist Broken? (NOT OFFLINE)

• When doing the default whitelist addition command: /whitelist add <name>, I get the error: could not add <name> to the whitelist
  I wasn't able to add the new players via the console nor the config file. Also keep in mind I was able to whitelist a few players before it randomly stopped working. -

SOLVED: WE WE'RE TYPING IGN'S THAT DIDN'T EXIST INTO THE CONSOLE, AND THAT'S WHY IT DIDN'T WORK: Apologies to the people we confused... our bad.