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# general
s
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p
Are app crashes a special type of event in NodeJS - I am assuming it should come up in error charts. Can you provide more details on this - does app crash not throw an error
a
it only shows up in the log fine on terminal like if I am calling a function which has not been defined then there is no notification or alert in SigNoz app…
and I also wondered I created errors but SigNoz didn’t show any error on the dasboard it still says on the error chart zero
like parallel line to the x axis
so I want to know which errors does SigNoz catches and how to create one purposefully.
caught it now… So SigNoz only catches errors which are produced before completion of the request and it start to show up on the graph as well
!!
so errors generated after it wouldn’t be helpful in the insights.
p
what kind of errors are you taking about that are generated outside the request-response scope. I was thinking more about errors/exceptions during a request-response lifecycle