Hello, odoo livechat is not showing up on my wordpress site. I have added the css and js file links in the header. Its showing up the following error:

Uncaught TypeError: Cannot read property 'Deferred' of undefined

    at process_job (external_lib.js:2106)

    at Object.process_jobs (external_lib.js:2112)

    at Object.define (external_lib.js:2095)

    at HTMLDocument.<anonymous> (1:7)

Uncaught TypeError: Cannot read property 'when' of undefined

    at external_lib.js:2113

    at 2de49.js:16