Error while using cartographer pakage

Hello Everyone,
I am working with a rosject from live class 76 related to cartographer mapping. I have followed all the steps as told by instructor but still i am having an error while executing shown in attached image. kindly help me as i am new to this platform.

Hello @Saqibmehmood736 ,

Thanks for reporting the issue found.
We are already investigating the problem and will reply you soon.