The title of your post states that you are installing PE for Pega 7,2, but the log file indicates that you are installing PE for Peg 7.4. Just checking on this discrepancy. ??
Also, it's best practice to attach logs and other files as Attachment to your post, avoiding long, scrolly posts. As an alternative to a log file attachment, your post can include only the key elements of the log. For example, include only key text that identifies the problem or root cause. Include the lines before the error or exception that indicate the context of the error condition.