For my keycloak version (18), the url configuration should not have "/auth" in the vite_vue3 example

[xxddff]

vue-keycloak-js/examples/vite_vue3/src/main.ts
original:
config: { url: 'http://localhost:8085/auth', clientId: 'vue-client', realm: 'vue' }
working for me:
config: { url: 'http://localhost:8085/', clientId: 'vue-client', realm: 'vue' }

[idc77]

I have adapted my keycloak server to be mounted under /auth/
If anything this should be configurable if it isn't already.