Dear Palash,
I am currently facing the same problem and we discussed this in another topic.
For some it seemed to work to update the SRTM source as described here: Problem in the last part of snap to stamps
But this doesn’t solve the problem for all.
Still, I recommend installing the latest update
We have created a ticket for this here and let you know once it has been resolved: https://senbox.atlassian.net/jira/software/c/projects/SITBX/issues/SITBX-834