[Bug] - Access token supplied contains Invalid chars [Demo-Apps/fullcontact_app]

[tejakummarikuntla]

Describe the bug
The moment hitting the submit button, it responds with a notification Access token supplied contains Invalid characters
P.S: I've configured the API Token at http://localhost:10001/custom_configs, Token created from the Admin page of freshchat.

Link to the bug'd Sample App
https://github.com/freshworks/marketplace-sample-apps/tree/cfb155bc4b9470bb07c7aeae4f852e6c88101099/Demo-Apps/fullcontact_app

To Reproduce
Steps to reproduce the behavior:

1. Configure the API Token at http://localhost:10001/custom_configs
2. Go to Freshchat, navigate to the inbox page.
3. Fill in the details and hit submit
4. See error via Notificaion.

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots

Browser (please complete the following information):
Chrome/Safari/ Firefox etc.

Additional context
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