Aitor

> I also have a similar problem now. Did you happen to edit the file with `openpyxl` before? Yes, with openpyxl no problem

> Hey everyone, sorry for the delay on addressing this its finals week. This should be resolved next week. Thank you for your patience Thank you!

I have the same problem. When i change the f5 devices on runtime, i see connections to the previous devices. Anyone knows how i can close the previous session?