Server install failing with multiple errors

When attempting (multiple times) to install the UrBackup Server, I get multiple errors of missing files etc. but nothing I do seems to help it. The screenshots and log is linked below. If you need any other information, please let me know and I will send it over. Many thanks!

EDIT: “An error occurred: Sorry, new users can only put 2 links in a post.” Therefore I have only included one screenshot and the log. Sorry.

Screenshot:

Log: