Spamming Console

NullReferenceException: Object reference not set to an instance of an object
  at Oxide.Plugins.PersonalNPC+PlayerBotController.Update () [0x0010d] in carbon\plugins\PersonalNPC.cs:3577 

Fixed it, hey where can we make the bot run faster, he is way slow.

Can I see your config?

Here

PersonalNPC.json

It's "Bot speed (slowest, slow, normal, fast)": "normal", but it may be limited by other plugins and server settings, but should work
if there is no boost in speed after changing the value in config then you should check these server commands, i've attached a screenshot

Changed Status from Pending to Closed