[Bug]: When using Milvus to search for images, this error occurs when clicking on the+button for loading images：Error with 'NoneType' object has no attribute 'count entities' images in this set0/0

[Bug]: When using Milvus to search for images, this error occurs when clicking on the+button for loading images：Error with 'NoneType' object has no attribute 'count entities' images in this set0/0 #123038