Elastic cluster is not available in elasticvue

[WouterSteen]

When you go to http://127.0.0.1:8080/welcome

http://elasticsearch7:9200 is not available

Error:

GET http://elasticsearch7:9200/ net::ERR_NAME_NOT_RESOLVED
(anonymous) @ ElasticsearchAdapter.ts:295
request @ ElasticsearchAdapter.ts:294
ping @ ElasticsearchAdapter.ts:51
test @ ElasticsearchAdapter.ts:312
testConnection @ ClusterConnection.ts:41
(anonymous) @ ClusterForm.vue:63
Wt.n.<computed>.n.<computed> @ runtime-dom.esm-bundler.js:1705
vo @ runtime-core.esm-bundler.js:199
Vn @ runtime-core.esm-bundler.js:206
n @ runtime-dom.esm-bundler.js:729
ClusterConnection.ts:47 TypeError: Failed to fetch
    at ElasticsearchAdapter.ts:295:14
    at new Promise (<anonymous>)
    at fr.request (ElasticsearchAdapter.ts:294:12)
    at fr.ping (ElasticsearchAdapter.ts:51:17)
    at fr.test (ElasticsearchAdapter.ts:312:31)
    at testConnection (ClusterConnection.ts:41:21)
    at ClusterForm.vue:63:35
    at Wt.n.<computed>.n.<computed> (runtime-dom.esm-bundler.js:1705:12)
    at vo (runtime-core.esm-bundler.js:199:19)
    at Vn (runtime-core.esm-bundler.js:206:17)

This URL is working in http://127.0.0.1:5000/#!/settings/clusters