Hi @Eragaraju, Nandini
This is generally caused by a post-function in Create transition.
Please go to workflow and check if there is any manually added one.
Related KB: https://confluence.atlassian.com/jirakb/error-we-can-t-create-this-issue-for-you-right-now-it-could-be-due-to-unsupported-content-when-trying-to-create-a-ticket-1063571759.html
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