Unexpected Application Error!

Cannot read properties of undefined (reading 'unsubscribe')

TypeError: Cannot read properties of undefined (reading 'unsubscribe')
    at tz.componentWillUnmount (https://zeta.yourtravelmates.com/app/default.c7a6ea19c6d6cec4.js:215:421200)
    at oh (https://zeta.yourtravelmates.com/app/default.c7a6ea19c6d6cec4.js:30:6465660)
    at od (https://zeta.yourtravelmates.com/app/default.c7a6ea19c6d6cec4.js:30:6464743)
    at oh (https://zeta.yourtravelmates.com/app/default.c7a6ea19c6d6cec4.js:30:6465734)
    at od (https://zeta.yourtravelmates.com/app/default.c7a6ea19c6d6cec4.js:30:6464743)
    at oh (https://zeta.yourtravelmates.com/app/default.c7a6ea19c6d6cec4.js:30:6465510)
    at od (https://zeta.yourtravelmates.com/app/default.c7a6ea19c6d6cec4.js:30:6464743)
    at oh (https://zeta.yourtravelmates.com/app/default.c7a6ea19c6d6cec4.js:30:6465734)
    at od (https://zeta.yourtravelmates.com/app/default.c7a6ea19c6d6cec4.js:30:6464743)
    at oh (https://zeta.yourtravelmates.com/app/default.c7a6ea19c6d6cec4.js:30:6465510)