?fit=1

I dont know why, but on buddypress member page, the avatar is just a plain single color. I inspect the code and i see that the avatar is 1px, and have this at the end of the link to the picture : ?fit=1%2C1. Removing ?fit=1%2C1 make the picture show up. How to remove ?fit=1%2C1 from the avatar ?

https://ww.wp.xz.cn/plugins/wp-user-avatar/