Ticket feedback causing error

[anita]

As soon as a client tries to rate their satisfaction using the portal, an error pops up as follows:

Unable to save rating

We were unable to save your feedback rating. Reload the page and give it another try. If the problem persists please contact your Administrator.

This issue seems to have popped up over the weekend because the last successful rating was done on Friday (NZST) at 2:12 PM.

A console view shows multiple errors in batch.js:

Uncaught (in promise) Error: No jira/navigation
at u (batch.js?locale=en-US&sd_operational=true:24)
at s (batch.js?locale=en-US&sd_operational=true:24)
at window.require (batch.js?locale=en-US&sd_operational=true:27)
at i (batch.js?locale=en-US&sd_operational=true:5243)
at batch.js?locale=en-US&sd_operational=true:5243
at new Promise (<anonymous>)
at Object.e.loadAmdResource (batch.js?locale=en-US&sd_operational=true:5243)
at Object.getNavigationAPI (batch.js?locale=en-US&sd_operational=true:5246)
at batch.js?locale=en-US&sd_operational=true:5276
at l (batch.js?locale=en-US&sd_operational=true:24)
at batch.js?locale=en-US&sd_operational=true:24

batch.js?locale=en-US&sd_operational=true:24 Uncaught (in promise) Error: No jira/navigation
at u (batch.js?locale=en-US&sd_operational=true:24)
at s (batch.js?locale=en-US&sd_operational=true:24)
at window.require (batch.js?locale=en-US&sd_operational=true:27)
at i (batch.js?locale=en-US&sd_operational=true:5243)
at batch.js?locale=en-US&sd_operational=true:5243
at new Promise (<anonymous>)
at Object.e.loadAmdResource (batch.js?locale=en-US&sd_operational=true:5243)
at Object.getNavigationAPI (batch.js?locale=en-US&sd_operational=true:5246)
at batch.js?locale=en-US&sd_operational=true:5276
at l (batch.js?locale=en-US&sd_operational=true:24)
at batch.js?locale=en-US&sd_operational=true:24

As well as a deprecation warning:

batch.js?locale=en-US&sd_operational=true:251 DEPRECATED JS - Cookie has been deprecated since 5.8.0 and will be removed in a future release. Use cookie instead.
at b.default (https://d1nzf8m8hbl4uk.cloudfront.net/atl-vertigo--shard-jira-prod-ap-1--3--jres.atlassian.net/s/d41d8cd98f00b204e9800998ecf8427e-CDN/-egccmf/b/24/a59c60d8c593a8efdf21286d1d50cf1a/_/download/contextbatch/js/customer.portal.wrm/batch.js?locale=en-US&sd_operational=true:248:209)

Please help - or let me know if anyone else is experiencing the same?