Fixed OCR submit error by changing to button click event

app.py

@@ -50,9 +50,7 @@ preprocess = transforms.Compose(
 )
 
 # Load ImageNet class labels
-with open("imagenet_classes.txt", "r") as f:
-# Load ImageNet class labels mapping
-imagenet_labels = []
+
 with open("imagenet_classes.txt", "r") as f:  # ensure this file is in your folder
     imagenet_labels = [s.strip() for s in f.readlines()]
 
@@ -191,27 +189,24 @@ with gr.Blocks() as demo:
             outputs=gr.File(label="Download PDF Report")
         )
 
+    
     # ------------------ OCR Tab ------------------
     with gr.Tab("OCR"):
         ocr_input = gr.Image(type="pil", label="Upload image for OCR")
+        ocr_button = gr.Button("Extract Text (OCR)")
         ocr_output = gr.JSON(label="OCR Results")
         pdf_button_ocr = gr.Button("Download OCR PDF")
 
-        ocr_input.submit(fn=ocr_image, inputs=ocr_input, outputs=ocr_output)
-        ocr_button = gr.Button("Run OCR")
-
-        ocr_button.click(
-            fn=ocr_image,
-            inputs=ocr_input,
-            outputs=ocr_output
-        )
-
+        ocr_button.click(fn=ocr_image, inputs=ocr_input, outputs=ocr_output)
+        
         pdf_button_ocr.click(
             fn=lambda x: generate_pdf(x),
             inputs=ocr_output,
             outputs=gr.File(label="Download PDF Report"),
         )
 
+
+
 # ------------------------------
 # 5. Launch the App
 # ------------------------------