Question on upgrading Mendix 7.23.6 to 8.1.1

Hi forumers, I have upgraded my project from Mendix 7.23.6 to 8.1.1, but with this errors exists: I also downloaded another Altas UI from App Store and override the old, and refer to the “Troubleshooting Atlas UI Changes” from official page, but it still like this. Could anyone give me a help, thanks!
1 answers

If all looks well after having followed the steps in the documentation, you can remove this Error by right-clicking it.

You then can mark it as solved.