TFR plots after source reconstruction

MNE version: 1.3.0
Operating system: macOS Sonoma 14.3.1

I have the following question. I have been asked to provide TFR plots in source space. So, I have tried to perform different source reconstruction methods (LCMV beamformer, eLORETA, DICS beamformer) and tried to create TFR plots. But unfortunately I have not been able to succeed, I do not understand how to plot TFR using stc.

Can you give me a hint as to what I can do?

Thank you so much!