"tor unexpectedly exited" after I edited the torcc file.

I am trying to setup my first onion site. I have followed the instructions and edited the torrc file. I have added below 2 lines

HiddenServiceDir C:\tor_service HiddenServicePort 8080 localhost:8080/tor_service/

Then I saved it. Now, when I try to start tor browser, following pop up appears tor unexpectedly exited restart the application

Trac:
Username: getvinay

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