Bug

[RandomRobbieBF]

Traceback (most recent call last):
  File "/Users/rwiggins/.BurpSuite/bapps/b2244cbb6953442cb3c82fa0a0d908fa/UploadScanner.py", line 982, in doActiveScan
    self.do_checks(injector)
  File "/Users/rwiggins/.BurpSuite/bapps/b2244cbb6953442cb3c82fa0a0d908fa/UploadScanner.py", line 1074, in do_checks
    colab_tests.extend(self._magick(injector, burp_colab))
  File "/Users/rwiggins/.BurpSuite/bapps/b2244cbb6953442cb3c82fa0a0d908fa/UploadScanner.py", line 1074, in do_checks
    colab_tests.extend(self._magick(injector, burp_colab))
  File "/Users/rwiggins/.BurpSuite/bapps/b2244cbb6953442cb3c82fa0a0d908fa/UploadScanner.py", line 1440, in _magick
    self._send_sleep_based(injector, basename, content, types, injector.opts.sleep_time, issue)
  File "/Users/rwiggins/.BurpSuite/bapps/b2244cbb6953442cb3c82fa0a0d908fa/UploadScanner.py", line 4315, in _send_sleep_based
    new_content = content.replace(BurpExtender.MARKER_CACHE_DEFEAT_URL, "https://example.org/" + ''.join(random.sample(string.ascii_letters, 11)) + "/")
AttributeError: 'NoneType' object has no attribute 'replace'

Upload Scanner Version: 1.0.8a

Extension code location: doActiveScan
Jython version: 2.7.3b1 (tags/v2.7.3b1:da3bfb368, Jul 8 2022, 18:32:48)
[OpenJDK 64-Bit Server VM (Oracle Corporation)]
Java version: 20.0.2
Burp version: Burp Suite Professional 2023 11.1.3
Command line arguments: 
Was loaded from BApp: True
Request: None