I made a mistake during interview which told the interviewer I already gave my resignation letter before the interview which previously I thought my resignation notice is 1 weeks.
After the company offer me a position, I tender my resignation letter and only realized the resignation notice was 1 month instead of 1 week.
Now the company doing the background check, and the HR indicated the last day of my employment is difference to the last day I wrote. What should I do? Will this affect me getting offer from the new company?