Using firefox dev, there is the console (ctrl + shift + k), and within that console there are answers, PHP error responses are simple, or when a variable is passed empty, but however, when it is an error of syntax in javascript, the message is a bit different and groups several things:
What is the most correct way to interpret this response from the console? Or, where is a manual about it?
PS: I made this mistake deliberately, I do not want the solution to this error, I want to know how to understand when there is such an answer.