diff --git a/webapp/packages/plugin-connection-template/src/ConnectionDialog/ConnectionController.ts b/webapp/packages/plugin-connection-template/src/ConnectionDialog/ConnectionController.ts
index 4c255c9608..84c8dcc73a 100644
--- a/webapp/packages/plugin-connection-template/src/ConnectionDialog/ConnectionController.ts
+++ b/webapp/packages/plugin-connection-template/src/ConnectionDialog/ConnectionController.ts
@@ -114,7 +114,7 @@ export class ConnectionController
     this.isConnecting = true;
     this.clearError();
     try {
-      const connectionNames = Array.from(this.connectionInfoResource.data.values())
+      const connectionNames = Array.from(this.connectionInfoResource.values)
         .map(connection => connection.name);
       const uniqueConnectionName = getUniqueConnectionName(this.template.name || 'Template connection', connectionNames);
       const connection = await this.connectionInfoResource.createFromTemplate(this.template.id, uniqueConnectionName);