Update app.py

app.py

@@ -1,5 +1,6 @@
 import subprocess, os
 import shutil
+import time
 
 def move_files_and_subdirs(source_dir):
     # List all files and directories in the source directory
@@ -21,7 +22,7 @@ def move_files_and_subdirs(source_dir):
 
 
 subprocess.run(['git', 'clone', 'https://github.com/metavoiceio/metavoice-src', './mvsrc'])
-subprocess.run(['sleep', '3'])
+time.sleep(3)
 move_files_and_subdirs("mvsrc")
 
 print(subprocess.run(['ls']))