Unable to create audio submix，Mix not found
Hello and welcome?
What version of Unreal is this?
4.26.2 version
Looks like you are missing a load of assets. Ensure you have all the correct audio plugins activated and see if that helps
Thank you for your answer
Audio plugins are normally enabled; I have to delete the “defaultengine.ini” file and the “saved” folder to solve the problem. I want to know why
Thats unusual and not something i’ve seen before - very strange. It sounds like something you would need to speak directly to the UE team about.
At a glance, this looks like you might not have the Audio Mixer enabled. Which is odd, because it should be enabled by default on 4.26 . . . nonetheless, you’ll need it for stuff like Submixes. If you had a command to disable Audio Mixer in your defaultengine.ini file, that might’ve been the culprit?