"An error has occurred using the Stylish database. Would you like to visit a web page with possible solutions?"
Browser: Firefox 60 (Nightly), but also on Firefox 58 (Stable)
OS: Win 7 Professional
I get this error today after my nightly version was updated. I don't make any actions on stylish from more than week. I already tried to reinstall firefox with stable version but still i get this error.
//sry if my english is bad