TypeError: 'NoneType' object is not callable when initializing imagej

This is my code:
```python
import scyjava as sj

def print_classpath():
System = sj.jimport('java.lang.System')
import re
classpath = re.split('[:;]', str(System.getProperty('java.class.path')))
print("\n".join(classpath))

sj.when_jvm_starts(print_classpath)

import imagej

import jpype
import jpype.imports
from jpype.types import *

jvm_path = "C:\\Program Files\\Eclipse Adoptium\\jdk-8.0.362.9-hotspot\\jre\\bin\\server\\jvm.dll"

if not jpype.isJVMStarted():
jpype.startJVM(jvm_path, "-ea")
print("JVM started successfully!")

if jpype.isJVMStarted():
print("JVM is running!")
else:
raise RuntimeError("Failed to start JVM")

ij = imagej.init()
print("ImageJ initialized successfully!")
```

and I am getting:

```
JVM started successfully!
JVM is running!
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
~\AppData\Local\Temp\ipykernel_18744\3541298497.py in
29
30
---> 31 ij = imagej.init(['net.imagej:imagej:2.1.0', 'net.imagej:imagej-legacy'])
32
33 # Inicializar Fiji

c:\Users\\AppData\Local\Programs\Python\Python37\lib\site-packages\imagej\__init__.py in init(ij_dir_or_version_or_endpoint, mode, add_legacy, headless)
1236 else:
1237 # HEADLESS or INTERACTIVE mode: create the gateway and return it.
-> 1238 return _create_gateway()
1239
1240

c:\Users\\AppData\Local\Programs\Python\Python37\lib\site-packages\imagej\__init__.py in _create_gateway()
1266 return False
1267
-> 1268 ij = ImageJ()
1269
1270 # Forward stdout and stderr from Java to Python.

TypeError: 'NoneType' object is not callable
```

I am using python 3.7.9.
I also tried using Python 3.9 and downloading pyimagej from github, and I get:
```
TypeError Traceback (most recent call last)
Cell In[1], [line 31](vscode-notebook-cell:?execution_count=1&line=31)
[27](vscode-notebook-cell:?execution_count=1&line=27) else:
[28](vscode-notebook-cell:?execution_count=1&line=28) raise RuntimeError("Failed to start JVM")
---> [31](vscode-notebook-cell:?execution_count=1&line=31) ij = imagej.init()
[33](vscode-notebook-cell:?execution_count=1&line=33) # Inicializar Fiji
[34](vscode-notebook-cell:?execution_count=1&line=34) #ij = imagej.init(["net.imagej:imagej", "sc.fiji:fiji", "org.morphonets:SNT:4.2.1"])
[35](vscode-notebook-cell:?execution_count=1&line=35) #ij = imagej.init('C:/Users//Downloads/Fiji.app/Fiji.app/') # Ajusta el path a la ubicación de tu instalación de Fiji
[36](vscode-notebook-cell:?execution_count=1&line=36) #ij = imagej.init('C:\\Users\\\\Downloads\\fiji-win64\\Fiji.app')
[37](vscode-notebook-cell:?execution_count=1&line=37) #ij = imagej.init('C:\\Users\\\\Downloads\\ij154-win-java8\\ImageJ')
[38](vscode-notebook-cell:?execution_count=1&line=38) print("ImageJ initialized successfully!")

File c:\Users\\AppData\Local\Programs\Python\Python39\lib\site-packages\imagej\__init__.py:1249, in init(ij_dir_or_version_or_endpoint, mode, add_legacy, headless)
[1246](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1246) return None
[1247](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1247) else:
[1248](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1248) # HEADLESS or INTERACTIVE mode: create the gateway and return it.
-> [1249](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1249) return _create_gateway()

File c:\Users\\AppData\Local\Programs\Python\Python39\lib\site-packages\imagej\__init__.py:1279, in _create_gateway()
[1270](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1270) _logger.error(
[1271](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1271) "***Invalid initialization: ImageJ2 was not found***\n"
[1272](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1272) "Please update your initialization call to include an ImageJ2 "
(...)
[1275](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1275) "be started once."
...
[1281](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1281) # Register a Python-side script runner object, used by the
[1282](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1282) # org.scijava:scripting-python script language plugin.
[1283](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py:1283) if callable(getattr(sj, "enable_python_scripting", None)):

TypeError: 'NoneType' object is not callable
```

I used doctor checkup and everything looks fine:
```
Checking Python:
--> Python executable = [c:\Users\\AppData\Local\Programs\Python\Python39\python.exe](file:///C:/Users//AppData/Local/Programs/Python/Python39/python.exe)

Checking environment:
--> It looks like you are NOT running inside a Conda environment.

Checking Python dependencies:
--> jgo: [c:\Users\\AppData\Local\Programs\Python\Python39\lib\site-packages\jgo\__init__.py](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/jgo/__init__.py)
--> scyjava: [c:\Users\\AppData\Local\Programs\Python\Python39\lib\site-packages\scyjava\__init__.py](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/scyjava/__init__.py)
--> imglyb: [c:\Users\\AppData\Local\Programs\Python\Python39\lib\site-packages\imglyb\__init__.py](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imglyb/__init__.py)
--> pyimagej: [c:\Users\\AppData\Local\Programs\Python\Python39\lib\site-packages\imagej\__init__.py](file:///C:/Users//AppData/Local/Programs/Python/Python39/lib/site-packages/imagej/__init__.py)

Checking Maven:
--> Maven executable = [C:\Users\\Downloads\apache-maven-3.9.8-bin\apache-maven-3.9.8\bin\mvn.CMD](file:///C:/Users//Downloads/apache-maven-3.9.8-bin/apache-maven-3.9.8/bin/mvn.CMD)
$ mvn -v
Apache Maven 3.9.8 (36645f6c9b5079805ea5009217e36f2cffd34256)
Maven home: [C:\Users\\Downloads\apache-maven-3.9.8-bin\apache-maven-3.9.8](file:///C:/Users//Downloads/apache-maven-3.9.8-bin/apache-maven-3.9.8)
Java version: 1.8.0_362, vendor: Temurin, runtime: [C:\Program](file:///C:/Program) Files\Eclipse Adoptium\jdk-8.0.362.9-hotspot\jre
Default locale: es_ES, platform encoding: Cp1252
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

Checking Java:
--> JAVA_HOME = [C:\Program](file:///C:/Program) Files\Eclipse Adoptium\jdk-8.0.362.9-hotspot
--> Java executable = [C:\Program](file:///C:/Program) Files\Eclipse Adoptium\jdk-8.0.362.9-hotspot\bin\java.EXE
...
OpenJDK 64-Bit Server VM (Temurin)(build 25.362-b09, mixed mode)

Questions and advice for you:
--> Did you intend to activate a Conda environment?
```

Any idea what might be the problem? I have tried all the possible initializations endpoints and I keep getting the same error.
Thank you

Start in imagej/__init__.py at init and _create_gateway, using the reported Python 3.7/3.9, Java 8, JPype, and scyjava setup to reproduce the NoneType call. Trace the ImageJ() creation and the enable_python_scripting path, then add or update a regression test that captures the failing initialization and verifies the corrected behavior.

Written by the indexing model from the issue text.