can't add assets.

I'm going to use the graphic symbol I made in the library by adding it as a personal asset.

I pressed the Add Asset button, but it's not added.

The same applies to selecting Export Asset, saving it as a file, and proceeding with the operation.

I tried to add a file-made asset from the asset library, but only the progress gauge goes up and it doesn't add.

If I can't register and use a personal asset, I have no choice but to do inefficient work.

How should I solve this problem?

I've already deleted the animation several times and tried to reinstall it, but it didn't work.

I'm from a non-English-speaking country and I'm using a translator to talk. Please understand even if the language does not look smooth.