So this is not a bug or an "issue", its simply that you have a solution that is using something that you didnt add into the solution. This is standard and happens all the time.
The question is
1: Did you delete these things FROM the environment or just from the project? Or neither, you just didn't add them.
They all seem to be part of a Table, which means columns.
It seems to me like either
A) when you took a dependency on the Table, you didn't select the columns, you just set the Table but not the properties (metadata and columns), go back and fix it. Do Add existing, choose the table, select the fields and add them and be done
B) or you have something else that is requiring these and that means
A) go to your solution
Add Existing Table
select the fields above
2, You can simply go to your solution and tell it to add all dependencies and it will add them.
publish all customizations
Export and be good :-)
If these suggestions help resolve your issue, Please consider Marking the answer as such and also maybe a like.
Thank you!
Sincerely, Michael Gernaey