Update app.py

app.py

@@ -151,9 +151,10 @@ class DocumentProcessor:
 # Call Analysis
 class CallAnalyzer:
     @staticmethod
-    def process_call(video_file):
+    def process_call(video_file):      
         """Process and analyze call recordings"""
         try:
+            initialize_pixeltable()
             calls = pxt.create_table(
                 'unified_app.calls',
                 {"video": pxt.VideoType(nullable=True)}