[TYPO3-mvc] Parameter is not optional / ReflectionParameter

[Johannes C. Schulz - EnzephaloN IT-Solutions]

Dear extbase-Friends

 

With an large extension we have a problem within the
SOAP-export-task-controller.

The thrown exception is:

Parameter is not optional

#0
/home/www/typo3_src/typo3_src-4.7.5/typo3/sysext/extbase/Classes/Reflection/
Service.php(459): ReflectionParameter->getDefaultValue()

#1
/home/www/typo3_src/typo3_src-4.7.5/typo3/sysext/extbase/Classes/Reflection/
Service.php(393):
Tx_Extbase_Reflection_Service->convertParameterReflectionToArray(Object(Tx_E
xtbase_Reflection_ParameterReflection), 2,
Object(Tx_Extbase_Reflection_MethodReflection))

What should say this to me? How can I fix that? Within the code I don't see
anything about "RefleectionParameter" or "getDefaultValue".

 

Please help.

 

Regards

Johannes