fix admin.py

accounts/admin.py

@@ -5,7 +5,7 @@ from django.contrib import admin
 class UserProfileAdmin(admin.ModelAdmin):
     list_display = ("user", "is_pro", "stripe_id", "teams_beta_seen")
     list_filter = ["teams_beta_seen", "teams_beta_applied"]
-    search_fields = ("user__username")
+    search_fields = ["user__username"]
 
 
 admin.site.register(UserProfile, UserProfileAdmin)