avatar image in Pile+Modal

I have a small problem.
I set up with likes on bbpress in Pile+Modal mode but when I click and the avatars appear, the users’ avatars are not displayed but only the default one for all users
How can I solve it?
Can someone help me?

<a href=”{up_profile_url}” class=”ulp-flex-row ulp-flex-middle-xs ulp-flex-start-md”> <span class=”ulp-flex-col-md-2 ulp-user-icon”> <img src=”{avatar_url}” class=”ulp-img-icon” title=”{display_name}” alt=”{display_name}” width=”80″ height=”80″ /> </span> <span class=”ulp-flex-col-md-10 ulp-user-info”> <span class=”ulp-title”>{display_name}</span> </span></a>