blank pop up screen when attempting to download on apple music?

For a while, when I try to download songs from apple music, my itunes accuses me of not being "logged in" to my apple music despite the fact that I never log out. Whatever. I just tried to download a song on apple music and for the first time, a blank white screen pops up and a orange, circled exclamation point appears in the top right corner claiming that my download was blocked. I went into my account through itunes and logged in again but it is still happening. Despite the fact that the blank pop up screen is extremely helpful, can anyone help me solve this problem?