[Dev-luatex] Importing .tex files using \directlua to navigate files and folders

Hi all, I've been trying to import all tex files and inside a given folder, the issue I'm facing is that my lua call is not able to navigate folders: it only works for files. It's worth mentioning that compilation successfully completes as the document is created, but I have no errors explaining me why it's not working as intended. I've also opened a question on tex.stackexchange. would you mind having a look at it ? https://tex.stackexchange.com/questions/653499/understanding-implicit-error-... Thanks in advance for your time