PTAM based Visual Navigation

While launching the TUM Ardrone, I encountered the following error:

Any suggestions/Corrections to fix this error?

Thank you very much in advance!!

Hello @shaktigehlaut,

This is a known error which we haven’t been able to solve yet. We are going to keep working in order to solve it, and I will let you know once it is solved. Meanwhile, please continue with the Chapters where PTAM Navigation is not involved, or even go for other courses. Sorry for the inconveniences.

Best,