Usermin download/attachemnt issues

Hello,

When i press download to attachment via Usermin it download my attachment broken with curl etc, so users cannot open downloaded file.

Like - > 20180721_140122.jpg_id=cur%2F1532329401%2E16705%5F2%2Eserver%2Edomain%2Ecom&folder=0&attach=3&save=1

when it shold be only -> 20180721_140122.jpg

Did you ever discover the issue with this??