Bug

[sickwell]

Traceback (most recent call last):
  File "/Users/node/.BurpSuite/bapps/b2244cbb6953442cb3c82fa0a0d908fa/UploadScanner.py", line 981, in doActiveScan
    self.do_checks(injector)
  File "/Users/node/.BurpSuite/bapps/b2244cbb6953442cb3c82fa0a0d908fa/UploadScanner.py", line 1073, in do_checks
    colab_tests.extend(self._magick(injector, burp_colab))
  File "/Users/node/.BurpSuite/bapps/b2244cbb6953442cb3c82fa0a0d908fa/UploadScanner.py", line 1073, in do_checks
    colab_tests.extend(self._magick(injector, burp_colab))
  File "/Users/node/.BurpSuite/bapps/b2244cbb6953442cb3c82fa0a0d908fa/UploadScanner.py", line 1439, in _magick
    self._send_sleep_based(injector, basename, content, types, injector.opts.sleep_time, issue)
  File "/Users/node/.BurpSuite/bapps/b2244cbb6953442cb3c82fa0a0d908fa/UploadScanner.py", line 4314, 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: 1.0.8

Extension code location: doActiveScan
Jython version: 2.7.1 (default:0df7adb1b397, Jun 30 2017, 19:02:43) 
[OpenJDK 64-Bit Server VM (Oracle Corporation)]
Java version: 16.0.2
Burp version: Burp Suite Professional 2021 10.2
Command line arguments: 
Was loaded from BApp: True
Request: None