Hi, @Raju10100. It would help us to examine the complete deploy logs at Netlify. Would you please send us a link to those?
It is also interesting that the build sites there for 30 minutes before the error occurs. (At least, I believe that is what is happening but I could be misunderstanding.) If this what is happening, the most likely explanation is that there is a worker process not being exited. Because the worker is still running, it appears to the build system that the build is not yet complete (because the processed never exited).
If this is the issue, there is more information about this here:
Please let us know if there are other questions about this.