#include <fstream>

UFUNCTION(BlueprintCallable, Category="imgReader")
virtual void getImg(std::string path2file);

void AActor::getImg(path2img){
ifsteam fin(path2file, ios::in| ios::img);
if(!fin.is_open){
UELOG(Err, TEXT('img not find!"));
}
みたいな感じちゃう?