Qatari residents who overstay their e-visa may face penalties such as fines, deportation, or even a ban on future travel to Egypt. The severity of the penalty will depend on the length of the overstay and other factors, such as whether the individual has committed any other offenses while in Egypt.
It's worth noting that overstaying your visa can also have an impact on your ability to travel to other countries in the future. Many countries require a clean record when it comes to visa violations, so having an overstay on your record could make it more difficult to obtain visas for other countries down the line.
To avoid these consequences, it's important to always be aware of your visa status and to make sure that you leave the country before your visa expires. If you do find yourself in a situation where you've overstayed your visa, it's essential to contact the local immigration authorities immediately and seek their advice on how to proceed.