{user_avatar_small} not working in impreza theme

Hello Dev,

I really love your plugin but there is one problem that {user_avatar_small} code is not working in impreza theme. Other shortcodes like {username}{first_name} are working perfectly. Please tell me the solution of my problem. I have also tried adding this shortcode in theme header builder ‘text elemetent’ and ‘custom html element’ but nothing worked.
Please tell me in impreza theme where i have to make changes to make it work.

Thank you in advance.

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