Hi @Ankit Kumar ,
Please have a check to see if you are using the newest release for VS2019.
https://my.visualstudio.com/Downloads?q=visual%20studio%202019&wt.mc_id=o~msft~vscom~older-downloads
Go to extensions-->Manage extensions-->check the SSIS project
Check to see if you need to update the project.
If the issue still occurs, please post the issue here to get more advice from the product team.
Regards,
Zoe
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.