Update app.py

app.py

@@ -136,7 +136,7 @@ def main():
             imge = cv2.imread("img.png")
             # get co-ordinates to crop the image
             imag, lc = line_cor.mark_region(imge)
-            c = lc[1]
+            c = lc[min(len(lc)-1,1)]
             # cropping image img = image[y0:y1, x0:x1]
             imgg = imge[c[0][1]:c[1][1], c[0][0]:c[1][0]]
             #plt.figure(figsize=(10,10))