Update app.py

app.py

@@ -244,7 +244,7 @@ def generate_pdf_report(original_img: Image.Image, mask: np.ndarray, overlay: Im
     pdf.set_font("Arial", 'I', 10)
     pdf.cell(0, 10, "This report was generated by DR Analysis System", 0, 1, 'C')
     
-    return pdf.output(dest='S').encode('latin1')
+    return pdf.output(dest='S')
     
 
 # ====================== MAIN APP ======================