I posted on the Webcore community as it seems like some of you are having the same error:
for the second time in less than a week, when I tried to edit a piston, I’ve got the “sorry, an error occurred while retrieving the piston data”
When going to hubitat apps and webcore, it shows Error: = character not at end of base64 value
I tried using "repair" on HPM and it gave me this:
one of the solutions was
"I’m not sure on the fatal error part.
You might want to do
reboot (like you did)
wait a few mins
manually update the webcore piston file"
It didn't work for me.
The only thing I can do is delete the piston through Hubitat. I'm using Webcore like the old times, not built-in
Thanks for any suggestion and help