Oh damn. It’s a slightly different error message though.
I’ll do some testing here and see if I can get my i86 NAS to do the same thing.
Confirmed error, and fixed it. 
To ensure you get the updated script:
sherpa reset
… then try your regular commands. 
Everything is back to normal now, and no weird errors are showing up. Thanks 
Great! 
Also suggest installing SortMyQPKGs to ensure your packages start in a working order on bootup:
sherpa install sort
Which leads to my second point: your uptime is a little high. Try letting it get no-higher than about 2 months. I reboot my production NAS every 8 weeks.