change cache dir

app.py

@@ -8,8 +8,10 @@ import numpy as np
 import os
 
 try:    
-    cache_dir = os.path.exists("cache")
-    ff1.Cache.enable_cache("/cache")
+    script_dir = os.path.dirname(os.path.abspath(__file__))
+    cache_folder = 'cache'
+    cache_dir = os.path.join(script_directory, cache_folder)
+    ff1.Cache.enable_cache(cache_dir)
 except:
     print('Cache error!!')