Hi, I am following Apple's Learning SwiftUI Tutorial. When I open Apple's example App: (specifying-the-view-hierarchy-of-an-app-using-a-scene-sample); MyApp, No preview of any kind is visible. The editor is set to canvas and side by side view. In Apple's tutorial page a black "preview" pill is shown in the right top of the editor, in my app: nothing... From the tutorial: My Xcode I am new to SwiftUI so I have no idea how to solve this. Can anybody help me?

Name of the file: ".textFile.txt.icloud" The contents of the txtfile: Lots of Chinese symbols (Not permitted to post.) (Google)Rǎo gǔ měng〰tibȃẐٜ pāng gǔ gèng yìn gé liáo èr၎dān lá méng zhī jié yù xuè suìbh pāng gǔ shéng jié shēn ái sǎ rèn yǔ gào gé liáo lì shù xīng jié nǎng bīn suǒ՟l pāng gǔ shéng jié shēn ái sǎ rèn yǔ gào shēn jī shē mánࠏᰯ bà shòu Translation (Google): "Disturbance error Long life" I deleted the file. Anybody who knows what this is?