There does not seem to be enough information here for me to tie this to a particular port. But there are errors for both logical (ifl) and physical (ifd) in the logs. I'm not sure how to interpret the "port 28" on the ifd error but assume this might be the index of that physical interface. Try this search to see if there is a match:
show interfaces extensive | find "Interface index: 28"
This will start the interface output in the affected physical interface. Look at the name of the next interface that shows.
Run show interfaces terse and see the name of the interface before that interface and this will be the one with the matching index 28. Thus the potential source of the messages.