getAllData returns "Cannot use 'in' operator to search for 'data' in d (riga 479, file "Code")"

Hi everyone,
I just tried for the first time to use this library and it returns me this error whenever I try to use ".getAllData(db_path,db_secret)" method. I tried both with secret and without secret key, but it keeps giving me the error.
Is there any way to fix it?