An error of this type could show up just as easily in your code as it did in Jetty's, so let's take a closer look at how it happened.

您的代码也可能和Jetty一样出现这种类型的错误，所以让我更详细地分析一下它是如何发生的。

youdao

In most cases, to find out the cause of the error you need to take some type of trace that will show the sequence of calls that lead up to the error.

在大多数情况下，要找出错误的起因，需要进行某种类型的跟踪，以便通过跟踪来揭示导致错误的调用序列。

youdao

Take out a blank sheet of paper or open up a word processor where you can type (I prefer the latter because it's faster).

拿出几张空白的纸或者打开一个文字处理软件(我比较倾向于后者，因为它比较快捷)。

youdao

For communities that may not be able to commit resources to a full micro-grid, or may take years to set one up, this type of resource is worth considering.

FORBES: Mobile Solar Generators - One Man's Odyssey to Bring Power Back to New York