YOU SAID:

At least you've seen that error by yourself.

INTO JAPANESE

少なくとも自分でそのエラーを見たことがあるでしょう。

BACK INTO ENGLISH

You will at least have seen the error yourself.

INTO JAPANESE

少なくとも自分でエラーを見たことがあるでしょう。

BACK INTO ENGLISH

At least you have seen the error yourself.

INTO JAPANESE

少なくともあなたは自分でエラーを見たことがあります。

BACK INTO ENGLISH

At least you have seen the error yourself.