Error message when trying upgrade

I am trying to upgrade my PC from Leap 15.3 I have iso images for 15.4 and 15.5. I have used the 15.5 iso to upgrade my laptop from 15.2 to 15.5 in one go with no problems

On my PC using either iso I get the following error message:
“The root partition in /etc/fstab has an invalid root device. It is currently mounted as /dev/sda4 but listed as none.”

I did not get this message on the laptop upgrade, so am puzzled. Can anyone offer a solution please.

Add the root filesystem to the /etc/fstab?

/etc/fstab reads:

UUID=80f46e8d-cac5-4d2d-aed3-f6acbdb4541b / ext4 defaults 0 1
UUID=80f46e8d-cac5-4d2d-aed3-f6acbdb4541b / ext4 defaults 0 1
UUID=80f46e8d-cac5-4d2d-aed3-f6acbdb4541b / ext4 defaults 0 1
UUID=3ffecb36-c41e-482b-b60d-c0c57dd4b702 /home ext4 data=ordered 0 2
UUID=3ffecb36-c41e-482b-b60d-c0c57dd4b702 /home ext4 data=ordered 0 2
UUID=3ffecb36-c41e-482b-b60d-c0c57dd4b702 /home ext4 data=ordered 0 2
UUID=BCB1-27EC /boot/efi vfat utf8 0 2
UUID=BCB1-27EC /boot/efi vfat defaults 0 2

Not sure what to add?

As you can see the file systems for / and /home are three times there. And /boot/efi twice. I can assume this can lead to problems.

Also I do not see any Swap, but that may be as intended.

BTW
Please, to make the pieces of computer code in your posts better consumable by technical oriented people:

And post as complete as possible. That is starting with the line with the prompt and the command, then all output, and ending with the new prompt line.
When you really feel you need to change anything in such a copy, then add that in a comment, else we take all characters literally.

When the text is very long, then you can upload to https://paste.opensuse.org/ .
Or you can use the tool susepaste by piping the output to it ind posting the URL you get.

Thanks for that info. As far as I know the file is as created during installation, so I don’t know why there are multiple entries. Nor how this relates to the error message.

Then remove extra lines.

Upgrade all done.
Removed extra lines from fstab. Rebooted into upgrade from USB Leap 15.5 from 15.3. Couple of third party packages not installed; need to work on this. Otherwise all systems go.