Chat window error

When I click in the "Chat " option in dashboard menu, this page opens in a new browser tab, with this broken image.

After this, a transition to the main chat page begins, as the page below.

Unlike the cloud version, the loading gif in the right panel does not change. So, I look the browser console:

ERROR 
Object { headers: {…}, status: 200, statusText: "OK", url: "http://link.is.here:29005/chat/assets/i18n/pt.json", ok: false, name: "HttpErrorResponse", message: "Http failure during parsing for http://link.is.here:29005/chat/assets/i18n/pt.json", error: {…} }
​
error: Object { error: SyntaxError, text: "<!DOCTYPE html>\n<html lang=\"en\">\n\n<head>\n  <meta charset=\"utf-8\" />\n  <title>Tiledesk - Open Source Live Chat</title>\n\n  <base href=\"./\"/>\n  <!-- <base href=\"/\"/>  -->\n  <!-- <base href=\"./\"/>  quando rilascio in prod sostituisco questo base con quello sopra -->\n\n  <meta name=\"color-scheme\" content=\"light dark\" />\n  <meta name=\"viewport\" content=\"viewport-fit=cover, width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no\" />\n  <meta name=\"format-detection\" content=\"telephone=no\" />\n  <meta name=\"msapplication-tap-highlight\" content=\"no\" />\n\n  <link rel=\"icon\" type=\"image/png\" href=\"assets/icon/favicon.ico\" />\n  <link rel=\"stylesheet\" href=\"//fonts.googleapis.com/css?family=Open+Sans:300,400,600,700&lang=en\" />\n  <!-- <link href=\"https://fonts.googleapis.com/icon?family=Material+Icons\" rel=\"stylesheet\"> -->\n  \n  <!-- <script src=\"./assets/js/chat21client.js\"></script> -->\n  <!-- <script src=\"https://unpkg.com/mqtt@4.1.0/dist/mqtt.min.js\"></script> -->\n\n\n\n\n  <!-- add to homescreen for ios -->\n  <meta name=\"apple-mobile-web-app-capable\" content=\"yes\" />\n  <meta name=\"apple-mobile-web-app-status-bar-style\" content=\"black\" />\n\n</head>\n\n<body>\n  <app-root></app-root>\n<script src=\"runtime.js\" defer></script><script src=\"polyfills-es5.js\" nomodule defer></script><script src=\"polyfills.js\" defer></script><script src=\"styles.js\" defer></script><script src=\"scripts.js\" defer></script><script src=\"cordova.js\" defer></script><script src=\"vendor.js\" defer></script><script src=\"main.js\" defer></script></body>\n\n</script>  \n</html>\n" }
​
headers: Object { normalizedNames: Map(0), lazyUpdate: null, lazyInit: lazyInit()
 }
​
message: "Http failure during parsing for http://link.is.here:29005/chat/assets/i18n/pt.json"
​
name: "HttpErrorResponse"
​
ok: false
​
status: 200
​
statusText: "OK"
​
url: "http://link.is.here:29005/chat/assets/i18n/pt.json"
​
<prototype>: Object { constructor: HttpErrorResponse(init)
 }
core.js:4002
    Angular 4
        defaultErrorLogger
        handleError
        next
        schedulerFn
    RxJS 5
        __tryOrUnsub
        next
        _next
        next
        next
    Angular 11
        emit
        onHandleError
        invoke
        run
        runOutsideAngular
        onHandleError
        handleError
        runTask
        invokeTask
        invoke
        timer
O Firefox não conseguiu estabelecer uma conexão com o servidor ws://link.is.here/ws/?token=JWT%20eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJfaWQiOiI2MDliZWM4OTY4NDg1MzAwMTJmMDBiYjUiLCJlbWFpbCI6ImFkbWluQHRpbGVkZXNrLmNvbSIsImZpcnN0bmFtZSI6Ikhhcm9sZG8iLCJsYXN0bmFtZSI6IkFkbWluIiwiZW1haWx2ZXJpZmllZCI6dHJ1ZSwiaWF0IjoxNjIxMjgxMTcxLCJhdWQiOiJodHRwczovL3RpbGVkZXNrLmNvbSIsImlzcyI6Imh0dHBzOi8vdGlsZWRlc2suY29tIiwic3ViIjoidXNlciIsImp0aSI6IjRjYWFiYWJlLWExOWQtNDA2YS1iNTMxLWRhYjgwYzkyOWIzZSJ9.xXvZR2QdzX_r9e9MdoM0uJgZtTkiokE_w8OpVh04i5g. main.56cb9f932689365e0d8e.js:1:3252415
A conexão com ws://link.is.here/ws/?token=JWT%20eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJfaWQiOiI2MDliZWM4OTY4NDg1MzAwMTJmMDBiYjUiLCJlbWFpbCI6ImFkbWluQHRpbGVkZXNrLmNvbSIsImZpcnN0bmFtZSI6Ikhhcm9sZG8iLCJsYXN0bmFtZSI6IkFkbWluIiwiZW1haWx2ZXJpZmllZCI6dHJ1ZSwiaWF0IjoxNjIxMjgxMTcxLCJhdWQiOiJodHRwczovL3RpbGVkZXNrLmNvbSIsImlzcyI6Imh0dHBzOi8vdGlsZWRlc2suY29tIiwic3ViIjoidXNlciIsImp0aSI6IjRjYWFiYWJlLWExOWQtNDA2YS1iNTMxLWRhYjgwYzkyOWIzZSJ9.xXvZR2QdzX_r9e9MdoM0uJgZtTkiokE_w8OpVh04i5g foi interrompida durante o carregamento da página.
GETws://link.is.here/ws/?token=JWT%20eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJfaWQiOiI2MDliZWM4OTY4NDg1MzAwMTJmMDBiYjUiLCJlbWFpbCI6ImFkbWluQHRpbGVkZXNrLmNvbSIsImZpcnN0bmFtZSI6Ikhhcm9sZG8iLCJsYXN0bmFtZSI6IkFkbWluIiwiZW1haWx2ZXJpZmllZCI6dHJ1ZSwiaWF0IjoxNjIxMjgxMTcxLCJhdWQiOiJodHRwczovL3RpbGVkZXNrLmNvbSIsImlzcyI6Imh0dHBzOi8vdGlsZWRlc2suY29tIiwic3ViIjoidXNlciIsImp0aSI6IjRjYWFiYWJlLWExOWQtNDA2YS1iNTMxLWRhYjgwYzkyOWIzZSJ9.xXvZR2QdzX_r9e9MdoM0uJgZtTkiokE_w8OpVh04i5g
[HTTP/1.1 404 Not Found 47ms]

O Firefox não conseguiu estabelecer uma conexão com o servidor ws://link.is.here/ws/?token=JWT%20eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJfaWQiOiI2MDliZWM4OTY4NDg1MzAwMTJmMDBiYjUiLCJlbWFpbCI6ImFkbWluQHRpbGVkZXNrLmNvbSIsImZpcnN0bmFtZSI6Ikhhcm9sZG8iLCJsYXN0bmFtZSI6IkFkbWluIiwiZW1haWx2ZXJpZmllZCI6dHJ1ZSwiaWF0IjoxNjIxMjgxMTcxLCJhdWQiOiJodHRwczovL3RpbGVkZXNrLmNvbSIsImlzcyI6Imh0dHBzOi8vdGlsZWRlc2suY29tIiwic3ViIjoidXNlciIsImp0aSI6IjRjYWFiYWJlLWExOWQtNDA2YS1iNTMxLWRhYjgwYzkyOWIzZSJ9.xXvZR2QdzX_r9e9MdoM0uJgZtTkiokE_w8OpVh04i5g. main.56cb9f932689365e0d8e.js:1:3252415