thread 8: fatal error

I am continuously getting thread: 8 fatal error what is the reason for this? i am currently working on getting a json file api the error occurs in   print(fatalError())

code-block
[ddd](https://developer.apple.com/forums/content/attachment/869b2e6b-1e70-4060-aaf1-5426d5e42bc1)

Because you have an error in your code ! Which crashes in thread 8. How do you want we guess where it could come from if you do not show the code where it occurs ?

Can be caused by various reasons. Can you detailed messages and stack traces?

what does the number after thread means?

thread 8: fatal error
 
 
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