Wait what, I just saw that you have a space in the name. That shouldn't be a thing. I could swear I added validation to the board creation form, but I guess not lol
You should double check that. Remember that the UI is a generally unsafe layer which can easily be manipulated (you just send GET and POST requests manually). Data verification must occur on the server side.
There are no instances where data is verified clientside only. For low traffic forms if it's usually only server side and the client receives an error message.
(Hope I heard Duolingo right.)