Why are some securities missing ratios/metrics that can easily be calculated?

I've been wanting to ask this thing for sometime......I look at for example the ServiceNow stock on various site (links below) and they all are missing a value for the P/E ratio. Why? Why especially considering that this ratio should easily be calculated? Anyone able to explain it?

https://www.investing.com/equities/servicenow-inc
https://finance.yahoo.com/quote/NOW/
https://elite.finviz.com/quote.ashx?t=NOW


Thanks
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If you lose money, they do not put in a value.

 

Anyone?

 

I answered your question. The company had no income so these websites do not place a vaule.

 

@Robert Morse I'm sorry, I did not get what you meant. I do now. Thank you for clarifying your answer.


Thanks
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Interestingly sites usually say "n/a" but it's not correct that the information is not available or not applicable, it is simply not a finite number


Thanks
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No problem. Years ago, it was more common to show negative earnings with a negative P-E, not sure why they stopped that.

 

@Robert Morse where is the screenshot you provided coming from?

Thanks
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https://marketchameleon.com/