Check file exists

.github/workflows/magisk.yml

@@ -534,6 +534,12 @@ jobs:
               Start-Process powershell.exe -Args "-executionpolicy bypass -command Set-Location '\$PSScriptRoot'; &'\$PSCommandPath'"
               exit
           }
+          
+          if (((Test-Path -Path $(ls -Q ./${{ matrix.arch }} | paste -sd "," -)) -eq \$false).Count) {
+              Write-Error "Some files are missing in the zip. Please try to download it again from the browser downloader, or try to run the workflow again. Press any key to exist"
+              \$null = \$Host.UI.RawUI.ReadKey('NoEcho,IncludeKeyDown')
+              exit 1
+          }
 
           reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock" /t REG_DWORD /f /v "AllowDevelopmentWithoutDevLicense" /d "1"