I have created filter and after sometime when reopen it i got error.
Welcome @Pratik Dedhia (C)
You should check with that person what modifications they have made.
If none of these apply, clear cache and start in the incognito mode.
Hi Pratik - Welcome to the Atlassian Community!
Do you see other filters okay? Maybe you no longer have permissions to the filter? Can others see it?
Time for you to open a support ticket with Atlassian then.
https://support.atlassian.com/contact/#/
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