Merge branch 'redmine-issues/22944' into 'develop'

REDMINE_ISSUE-22944 | Bouton se connecter ne renvoie plus sur la page de connexion

See merge request !828

src/components/AppHeader.vue

@@ -284,7 +284,10 @@ export default {
       return this.configuration.VUE_APP_DISABLE_LOGIN_BUTTON;
     },
     SSO_LOGIN_URL() {
-      return `${this.configuration.VUE_APP_LOGIN_URL}/?next=${encodeURIComponent(window.location.href)}`;
+      if (this.configuration.VUE_APP_LOGIN_URL) {
+        return `${this.configuration.VUE_APP_LOGIN_URL}/?next=${encodeURIComponent(window.location.href)}`;
+      }
+      return null;
     },
 
     logo() {