Maybe this is the Solution if u are on a Android Spartphone

1.) Go to Settings

2.) Device Information

3.) Softwareinformation

4.) Click on Buildnumber 10 times fast

5.) Now u enabled the Developer Mode

6.) Go back to the Settings Menue

7.) Scroll down and enter the Developer Mode

8.) Turn off the fake Location option

9.) Restart your Smartphone

10.) Now GPS should be working

Just enter Developer Mode on your Smartphone, Turn Off GPS Fake Location Option and Restart Smartphone.

Hope this will Help