Not able to Access the Clinet Secret Id in Node JS application

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Hi All,

 In my Node JS application, we are using Client Secret ID for Google 0Auth 2. When I directly assign the static Client Secret ID to the google authentication key it is working fine. But when I read the value of Client Secret ID from a text box in the UI by code and assigned to google authentication key, on submit it is displaying an error message "the key is probably invalid". 

Can you please advice.

Thanks ,

Kiran Kumar.