if you have the discord server for repl.it ask their. It might help. People their are much more active
https://replit.com/discord @botApi. Hopefully they help. There's specific chat places to ask those such as:
that's actually one of them
Mark if helped!
(i don't know exactly how bookstack works so yea you'd have to ask them. Even if you don't get an answer there for a bit of time, don't worry. It's faster than waiting years for someone to cross across your repl post.)