Why the import type Asset Bundle generate TextAsset is only 1kb?

hi every handsome
when execute RuntimeManager.LoadBank load the .bytes TextAsset, it also use the .bank QAQ
so what is the meaning of import type Asset Bundle? can it hot fix?
online waiting, anxious!!

The reason the TextAsset files are small is explained in this document: Bank Stub Assets
TextAssets contain “stub data” when working in the Unity Editor, and this data is just a link to the real banks. During the build stage the TextAssets are filled with real data for the packaged game, and when the build is finished it goes back to being stub data.

thank you very much jeff.