File integrity after clean installation 12.0.1


I installed the nextcloud on a free hosting website 000webhost and after the installation this message appears: “There were problems with the code integrity check. More information”. What can I do? Please see screenshot below

Ps:I uploaded the files using file manager not ftp. And my OS is Windows 7

well, you just need to follow these instructions. What you have to do is already poste by you in the Screenshot.
just follow the instructions in the docs (installation)

Yeah I see, but I really don’t know how to do the file integration?

Can you please tell me step by step?
Im running Windows not Linux

Maybe this brings you a little step to the future: