Same issue here. Since I updated my iPad to iOS 15, developing with it became very confusing and sometimes impossible like right now. Did you receive code level support and found a solution?
yoKurt
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Solution: after changing .nameTypeOrLexicalClass to just .lexicalClass, it executed the closure.
Is there an answer to this problem? What directory exactly is missing? kbulutozler's answer doesn't work for me for some reason. I am using an CSV file to train a model, which worked perfectly in the past.
I also tried to edit the build scheme and making sure that everything is set to "debug" but no luck so far. I also tried to set the signing capabilities from automatic to manual with my Apple developer account.