How to fix an error occurs during installment in dual boot

My old PC is too old for MX Linux. So, I try to replace it with Zorin OS Lite for the dual boot setup. In the MX Linux partition, I install the root "/" of Zorin. Near the end of the installment, I got an error message "Error restoring installed applications" and "installer crashed" (see the screenshots). After restarting the PC, the boot screen looks fine. After selecting Zorin, the screen somewhat looks like MX Linux which the command bar is vertical on the lift side of the screen. But it isn't MX Linux, nor Zorin. On the top left corner, there are two icons: FAQ and Manual. When I click any of them, I get an error message (see the attached screenshots).

I installed it twice with the same errors. When I reinstalled it, I noticed that "/" didn't show up in the Zorin partition.

How to solve the problem?

screenshots : https://1drv.ms/u/s!AlZPYMhQ1utwkAF3...pI8f8?e=9NZnCd