{{Immigrant}} is in the list of current stickers (https://www.wikitree.com/wiki/Template:Immigrant) , so not sure why it would be marked as out of date...
is there a reason you have it enclosed in <ref> </ref> ??? that throws the image down to the <references /> instead of displaying in the regular biography section.
that might be causing the error, Ales would probably be the person to answer that....
also, you have the wrong flag images
New Jersey is US_State_Flag_Images-34.png not Flags-34.png
Virginia is US_State_Flag_Images-49.png not Flags-49.png