We are facing an error in our lightning component. All seems to be working good but unnecessarily this error pops up. Suppose I have performed any task from button click in the component, all will run on first time button if I do same thing once again then all the functionality get performed well but it shows error . Problem is not only with button click but also on other events such as onChange of text etc.
Below is the screenshot of the error :
Can anyone help in this?