Save values specifically

[NDL_Oficial (NDL ARG.)]

It was the first thing I did but I have this error

Error when reversing the list

What is the error? the values ​​when turning the list returns them to me in this weird way. My application does not obtain the data correctly, and now I put a list to corroborate the error and it looks like this: [SharedScreenshot] [IMG_20200811_153943] OPEN IMAGE [blocks (25)] [blocks (24)]