Heteronuclear NOE analysis problem

Dear Vicky,

I apologise if I am writing here again, but I am struggling with the NOE again with another batch of experiments. Apparently the errors are not computed. Do you have any clue what could be the issue? I am attaching the screenshot of the current batch of experiments where I cannot compute the errors. Moreover also with previous data where I could extract the spectra density function, the spectral density mapping does not work at the end, and does not return any graph, do you know why?

Thank you very much