there issue in my code with send date to MySQL

kindly I'm new for code and and know I get some online training course to learn how to write code with Python but there is issue with my code I couldn't know what this is issue and the issue is as the below description :

• at the course the teacher wrote the below code to send data from the UI Interface to the data base as the below picture :

the color of the code between Trible Contention (''') changed to green and when he run the program and press add he transferred the data from the interface into the Database

• but when I tried to write the code and run the program the after tried to transfer the data to the database the program is finished with exit code [-1073740791 (0xC0000409)] and when I checked the code I found the code between the Trible contrition (''') didn't transferred to green and there is issue showed to me is [unresolved SQL references check] as the below picture :

kindly waiting your kindly support to continue with my studying Regards Ahmed Alobaede