Using the same method above, here are the problem assets in your project:
I recommend opening the project and locating these assets in the Content Browser, fix or delete them, then right-click on the Contents folder and choose: Fix up redirectors in folder. Save All. Close and delete the Intermediate and Saved folders from the project folder. Then see if you can open the project through the Launcher. If not, open from the uproject file as before and see if there are any new blockers.