ValueError: invalid literal for int() with base 16: ''

[Goatghosts]

Hi, I would like to share a few txids that the presented code for getting rsz values ​​is not able to process.
In each case I get the same error:

Starting Program...
Traceback (most recent call last):
  File "D:\Desktop\getz_input.py", line 129, in <module>
    m = parseTx(rawtx)
        ^^^^^^^^^^^^^^
  File "D:\Desktop\getz_input.py", line 73, in parseTx
    r, s, pub = split_sig_pieces(script)
                ^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Desktop\getz_input.py", line 44, in split_sig_pieces
    sigLen = int(script[2:4], 16)
             ^^^^^^^^^^^^^^^^^^^^
ValueError: invalid literal for int() with base 16: ''

It would be great if you could let me know how to fix this error.
Bitcoin TXID-s:

1. cd547fe6f8fde5ed62c4226e82e4f358c413178f28f8660bbb2be08fb6177bb6
2. a00efb5bba99dbb146da2e801ef6500a380f856861e83438fa46682bc89ab6b2
3. 694f517ccc128beebbe54ac8a715e0bdd7f1ddeafc943af5e2b8914918119478
4. b2b86d11c453fc41be430ffbce43bd70e8d38ee1b5389c9e93c9b62355fd8054
5. 5f81a95d1c87441a7d8a69c563cbcf623ebfbb2ec3cac07640dcbda63d5698a5
6. d51e21855fa52831be0c0a1a4138e88600e5fcc70c7acd4aad8697d5c9b76245
7. 50d6edfdab3a6302fac5c5618162bc10cdfb54914e7de6c456200a2dab3d2417