This particular site is used for admin and the menu icons don't really fit but it looks odd to have only one item with an icon. They look beautiful on my public website:)
It's from my own Dadadik database and I used PHPMyAdmin to create the table and show you the different types as that's what the error message suggests your problem is.
Now I'm confused - I thought you were trying to use the import process to get the contents of an xlsx file into your dadabik database??
If that's what you are trying to do then the issue is a wrong type of field on the database (that's what the error innodb engine required for import is telling...
You could try backing up your custom_functions.php file, then replace it with the clean version from Dadabik v12 download and try the upgrade again. If it works you can then add your custom functions back into the new file.
No, you don't need to reinstall - I would recommend logging out, changing the $dadabik_session_name and logging back in again to ensure your changes are picked up.
Please remember the user needs insert permissions to execute the import procedure from CSV.
This post might be relevant to you as well:-
https://dadabik.com/forum/index.php?threads/step-2-4-not-working-on-upgrade-from-11-12-to-12-0.24708/post-26349