wont mask any url I give

[ADCmainEater]

here is the error given : Traceback (most recent call last): File "/home/rayane/Desktop/maskurl/maskurl.py", line 80, in print(f"\033[91m {MaskUrl(target, mask, keyword)}\033[00m") ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/rayane/Desktop/maskurl/maskurl.py", line 40, in MaskUrl url = Shortner(target_url) ^^^^^^^^^^^^^^^^^^^^ File "/home/rayane/Desktop/maskurl/maskurl.py", line 33, in Shortner return post(f"https://is.gd/create.php?format=json&url={big_url}").json()['shorturl'] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ KeyError: 'shorturl'