Wants to hide firebase error

Sometime it’s give permission denied error due to strict security rule
I don’t want to show it to user and wanted to hide it

Instead of hiding it, why don’t you fix it?

The probability of coming this error is 1 out of hundred my code is perfect but maybe firebase denied it by chance just for a sec then he permit

Use the Firebase’s event handler to suppress the warning.
The simplest way would be to use the evaluate but ignore result block in the Firebase Error event.