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OSError: unlink(): an unknown error occurred
Describe the bug Extension is not working at all
To Reproduce Steps to reproduce the behavior:
- Go to Burp extender tab
- Click on BApp Store
- Click on InQL - Introspection GraphQL Scanner
- Click on Install
- See error in burp extensions' errors log
Expected behavior Extension to be loaded and running
Screenshots

Desktop (please complete the following information):
- OS: Windows 10
- Java Version: java 9.0.4
- Python Version: Jython v2.7.2/Python 3.9.6
- Burp Version: 2022.1.1
- Version: 4.0.5
Additional context
Traceback (most recent call last):
File "C:\*\*\*\*\*\*\*\*\*\*\*\*\AppData\Roaming\BurpSuite\bapps\296e9a0730384be4b2fffef7b4e19b1f\ext\inql_burp.py", line 78, in <module>
from burp_ext.extender import BurpExtender
File "C:\*\*\*\*\*\*\*\*\*\*\*\*\AppData\Local\BurpSuitePro\jython-standalone-2.7.2.jar\Lib\contextlib$py.class", line 24, in __exit__
File "C:\*\*\*\*\*\*\*\*\*\*\*\*\AppData\Local\BurpSuitePro\jython-standalone-2.7.2.jar\Lib\contextlib$py.class", line 24, in __exit__
File "C:\*\*\*\*\*\*\*\*\*\*\*\*\AppData\Roaming\BurpSuite\bapps\296e9a0730384be4b2fffef7b4e19b1f\ext\inql_burp.py", line 14, in __stickytape_temporary_dir
shutil.rmtree(dir_path)
File "C:\*\*\*\*\*\*\*\*\*\*\*\*\AppData\Local\BurpSuitePro\jython-standalone-2.7.2.jar\Lib\shutil$py.class", line 247, in rmtree
File "C:\*\*\*\*\*\*\*\*\*\*\*\*\AppData\Local\BurpSuitePro\jython-standalone-2.7.2.jar\Lib\shutil$py.class", line 252, in rmtree
File "C:\*\*\*\*\*\*\*\*\*\*\*\*\AppData\Local\BurpSuitePro\jython-standalone-2.7.2.jar\Lib\shutil$py.class", line 250, in rmtree
OSError: unlink(): an unknown error occurred: C:\*\*\*\*\*\*\*\*\*\*\*\*\AppData\Local\Temp\tmpvgrau_\burp_ext\__init__.py
at org.python.core.PyException.doRaise(PyException.java:211)
at org.python.core.Py.makeException(Py.java:1638)
at org.python.core.Py.makeException(Py.java:1642)
at org.python.core.Py.makeException(Py.java:1646)
at org.python.core.Py.makeException(Py.java:1650)
at shutil$py.onerror$16(shutil.py:226)
at shutil$py.call_function(shutil.py)
at org.python.core.PyTableCode.call(PyTableCode.java:173)
at org.python.core.PyBaseCode.call(PyBaseCode.java:306)
at org.python.core.PyBaseCode.call(PyBaseCode.java:158)
at org.python.core.PyFunction.__call__(PyFunction.java:437)
at shutil$py.rmtree$14(shutil.py:256)
at shutil$py.call_function(shutil.py)
at org.python.core.PyTableCode.call(PyTableCode.java:173)
at org.python.core.PyBaseCode.call(PyBaseCode.java:168)
at org.python.core.PyFunction.__call__(PyFunction.java:437)
at shutil$py.rmtree$14(shutil.py:256)
at shutil$py.call_function(shutil.py)
at org.python.core.PyTableCode.call(PyTableCode.java:173)
at org.python.core.PyBaseCode.call(PyBaseCode.java:306)
at org.python.core.PyBaseCode.call(PyBaseCode.java:126)
at org.python.core.PyFunction.__call__(PyFunction.java:416)
at org.python.pycode._pyx5.__stickytape_temporary_dir$1(C:/*\*\*\*\*\*\*\*\*\*\*\*/AppData/Roaming/BurpSuite/bapps/296e9a0730384be4b2fffef7b4e19b1f/ext/inql_burp.py:14)
at org.python.pycode._pyx5.call_function(C:/*\*\*\*\*\*\*\*\*\*\*\*/AppData/Roaming/BurpSuite/bapps/296e9a0730384be4b2fffef7b4e19b1f/ext/inql_burp.py)
at org.python.core.PyTableCode.call(PyTableCode.java:173)
at org.python.core.PyGenerator.__iternext__(PyGenerator.java:161)
at org.python.core.PyGenerator.__iternext__(PyGenerator.java:143)
at org.python.core.PyIterator.next(PyIterator.java:45)
at org.python.core.PyGenerator.generator_next(PyGenerator.java:95)
at org.python.core.PyGenerator$generator_next_exposer.__call__(Unknown Source)
at org.python.core.PyObject.__call__(PyObject.java:450)
at contextlib$py.__exit__$4(contextlib.py:51)
at contextlib$py.call_function(contextlib.py)
at org.python.core.PyTableCode.call(PyTableCode.java:173)
at org.python.core.PyBaseCode.call(PyBaseCode.java:187)
at org.python.core.PyFunction.__call__(PyFunction.java:449)
at org.python.core.PyMethod.__call__(PyMethod.java:171)
at org.python.core.ContextGuard.__exit__(ContextGuard.java:29)
at org.python.pycode._pyx5.f$0(C:/*\*\*\*\*\*\*\*\*\*\*\*/AppData/Roaming/BurpSuite/bapps/296e9a0730384be4b2fffef7b4e19b1f/ext/inql_burp.py:78)
at org.python.pycode._pyx5.call_function(C:/*\*\*\*\*\*\*\*\*\*\*\*/AppData/Roaming/BurpSuite/bapps/296e9a0730384be4b2fffef7b4e19b1f/ext/inql_burp.py)
at org.python.core.PyTableCode.call(PyTableCode.java:173)
at org.python.core.PyCode.call(PyCode.java:18)
at org.python.core.Py.runCode(Py.java:1687)
at org.python.core.__builtin__.execfile_flags(__builtin__.java:535)
at org.python.util.PythonInterpreter.execfile(PythonInterpreter.java:287)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at burp.c8o.<init>(Unknown Source)
at burp.ba0.a(Unknown Source)
at burp.ctj.lambda$panelLoaded$0(Unknown Source)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
at java.base/java.lang.Thread.run(Thread.java:831)
Is the username containing any special character in the name? stickytape, the python packer we are employing at the moment, has some problem with special characters/UTF-8 on Windows, at the moment.
Is the username containing any special character in the name?
stickytape, the python packer we are employing at the moment, has some problem with special characters/UTF-8 on Windows, at the moment.
No, It does not contain any special characters, just regular English characters without spaces.
I couldn't reproduce this issue, but stickytape had a matching bug which prevented it from deleting a temporary directory. I think this might be resolved by just updating stickytape. The change is in the master branch now, you can try it out or wait for the next release!