try rec chdir to get paths to configs right

app.py

@@ -24,8 +24,8 @@ def run_on_gpu(input_point_cloud: gr.utils.NamedString,
 
     import os
     import sys
-    # os.chdir(os.path.dirname('./ppsurf'))
     sys.path.append(os.path.abspath('ppsurf'))
+    os.chdir(os.path.dirname('./ppsurf'))
     from ppsurf.pps import cli_main
 
     in_file = '{}'.format(input_point_cloud.name)