My Task #7 failed -- I do not understand why

I handle the task #7 concernint archives as required but I surprise by the end.
It’s said that I failed. I’m not aggree whith that. Below a screenshot of my result.
Please do correct my mistake if I failed

Hi @jmbollo

In this task the required extension of archive i.e .tar.gz is clearly mentioned. tar is only used to archive number of files into a single file however please note the gz as well which is used to compress the data. So need to make sure you also use compression. You should have used tar command with z option.