Pretty much whenever i try to load a texture pack or multiple packs it sometimes removes the pack instead of applying it and makes my minecraft go back to the default pack. Packs that have worked before do this. Sometimes they work most times they don't kinda getting annoying as well. Any fixes?

edit: This is what staff said to others having the problem https://gyazo.com/4f0c20b0ba22187245fb64aa798a0307