Error in terrain correction

I am very new to this field. There is an error in terrain correction after getting velocity by offset tracking. the error is “a problem occurred during the target product initialization, type: operator Exception, the message is : points of linearRing don’t form a closed linestring.” plz help me ti short out this.
thanks in advance

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This issue is very well discussed in many topics, I’d suggest guide you to use the search in the upper right corner to search your error or/and any scientific issue related to SNAP or S-1/2 and -3 and the processing,

Here is an example, please take a look,

Thankyou Sir