Notarized app based on the qt framework will crash on qwebkit on mac 10.15

Hello, our mac app is developed based on the qt framework, and the software uses qwebkit technology internally. Before February 3rd, after our software was signed and notarized, it could run on mac 10.15 normally. After February 3rd, before the software is signed and notarized, the software can run normally on mac 10.15, but after the software is signed and notarized, the program will crash at the initialization of the qwebkit object. We can't find the reason, I hope to get your help.