Update app.py

app.py

@@ -282,7 +282,13 @@ with demo:
 
         with gr.TabItem('WebCam'):
             with gr.Row():
-                web_input = gr.Image(source='webcam', type='pil', height=750, width=750, streaming=True)
+                web_input = gr.Image(
+                    sources=["webcam"],
+                    type="pil",
+                    height=750,
+                    width=750,
+                    streaming=True
+                )
                 img_output_from_webcam = gr.Image(height=750, width=750)
             cam_but = gr.Button('Detect')