Category name is getting passed instead of code on PLP

Question

On opening the PLP/Category page, I am getting the error:

Category with code abc not found! (Active session catalogversions: xyz)

Interestingly, the category name is showing as abc instead of the category code. Therefore, I am assuming that the category name is getting passed instead of the category code.

This error is coming from-

Category with code '" + code + "' not found! (Active session catalogversions: " + getCatalogVersionsString() + ") which is in -

1. DefaultCommerceCategoryService
2. DefaultCategoryService

I have applied loggers in both of these classes (after overriding) but I am still getting the error. Is there some class that I am missing?