include BASE_URL in image serialization

backend/theme/serializers.py

@@ -1,7 +1,7 @@
 from os.path import join
 
 from django.conf import settings
-from django.utils.translation import activate, gettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 from django_markup.markup import formatter
 
@@ -47,8 +47,8 @@ def serialize_theme(theme: ThemeConfig) -> dict:
         'description': theme.description,
         'headingFontUrl': theme.heading_font_url,
         'bodyFontUrl': theme.body_font_url,
-        'logoUrl': join(settings.MEDIA_URL, str(theme.logo_image.file)) if theme.logo_image else None,
-        'backgroundUrl': join(settings.MEDIA_URL, str(theme.background_image.file)) if theme.background_image else None,
+        'logoUrl': f'{settings.BASE_URL.strip("/")}/{settings.MEDIA_URL.strip("/")}/{str(theme.logo_image.file)}' if theme.logo_image else None,
+        'backgroundUrl': f'{settings.BASE_URL.strip("/")}/{settings.MEDIA_URL.strip("/")}/{str(theme.background_image.file)}' if theme.background_image else None,
         'footer': serialize_footer(theme.footer) if hasattr(theme, 'footer') else None,
         'header': serialize_header(theme.header) if hasattr(theme, 'header') else None
     }