Error "removeChild on Node" no idea where to find this

Hi, I solved the error about this page but I have a new one to deal with and no idea how to solve it.
pass: viktor

Go to AsistenciaGuardias and the problem is with I want to select the second chart. Any first chart is working OK but the second chart give me this error:

Screen Shot 2022-09-29 at 16.54.40

Thanks, Mario

OK, typing this error give me a clue of what was the problem.

I found this reference ‘myChart’ same at the 3 different charts I change the name for each graphic and solved!!

Screen Shot 2022-09-29 at 20.56.07

Thanks, Mario