The solution should be as @Goyo mentioned above: make sure the file is named correctly and in the correct folder. (In a folder named .secrets, have a file named secrets.toml.) If you cannot see your file extension in your file navigation, be extra careful about secrets.toml vs something like secrets.toml.txt on accident. I recommend working with your files directly in your IDE (like VS code) which should show you your complete file names with extensions.