Can you confirm it is V10.1.1.0.NCKMIFI from 2019-02-26?Latest stable Nougat firmware is recommended
I am not sure exactly which firmware I have, but if I try to patch the new PixelExperience ZIP file with TWRP I get an "assert failed"-error message (trustzone...). I found information that says this happens because of the wrong firmware version.
Please give the exact firmware version and instructions how to patch it in your original post to avoid problems with your ROM. Thank you!