Why is the Mach exception `EXC_CRASH` only catchable by an out-of-process handler? - mach

EXC_CRASH can only be caught by an out-of-process exception handler. I'm curious about why the handler has to be out-of-process.

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A java.lang.NullPointerException exception has occurred

A java.lang.NullPointerException exception has occurred.
However, the system should continue working without further problems.
When I create a class, I get this error.
Can you help me fix this error?

SOAP Webservice is giving the below error- Invocation target exception

thrown exception, unwinding now
org.apache.cxf.interceptor.Fault: Error invoking remote service: ; nested exception is:
java.lang.ClassCastException: org.apache.axis.attachments.AttachmentsImpl cannot be cast to org.apache.axis.attachments.Attachments
at org.apache.cxf.service.invoker.AbstractInvoker.createFault(AbstractInvoker.java:162)
Caused by: com.sample.base.adapter.ef.subscriptionhandler2.SubscriptionHandler2Exception: Error invoking remote service: ; nested exception is:
java.lang.ClassCastException: org.apache.axis.attachments.AttachmentsImpl cannot be cast to org.apache.axis.attachments.Attachments

No stacktrace showing in Crashlytics console when Flutter app calls 'recordError'

I am using the Crashlytics method 'recordError' to for a non-fatal error to be sent to crashlytics.
I am grabbing the current stacktrace, and passing it to recordError as follows...
StackTrace stacktrace = StackTrace.current;
FirebaseCrashlytics.instance.recordError("forced error" , stacktrace);
I have used the debugger to inspect the stacktrace, and it has multiple frames present.
When the error arrives in the crashlytics console, it arrives with only a single frame in the stacktrace and it says...
Non-fatal Exception: io.flutter.plugins.firebase.crashlytics.FlutterError
forced error. Error thrown null.

Anylogic does not show me the error on console

I did a model on anylogic. The build does not give me error but when i select "run", the model does nothing and it says "Error" (see image"), nevertheless the console does not show any detail , so i don't know what i did wrong. What could be the mistake?Thanks
the model:https://unisalerno-my.sharepoint.com/:u:/g/personal/l_aurilio1_studenti_unisa_it/EUGmkBzu9cxLrHtjOzkJu64BgSM6tpZnsEWktP_NgA1d2Q?e=HE3cLj
Actually the console DOES show errors. But you can see them in desktop client, not browser:
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "AnyLogic model execution control handler"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "Frame Collector"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "qtp510744362-31"
And the reason for those is exceeding of experiment memory. After increasing it from 512Mb to 8Gb it runs.
the problem was linked with a resource pool,which size was more of 50000, exceeding the maximum value of available agent for student version.

java.rmi.ServerError: Error occurred in server thread; nested exception is:

I'm upgrading jdk from 8 to 10 and get an exception:
java.rmi.ServerError: Error occurred in server thread; nested exception is:
java.lang.NoClassDefFoundError: java/sql/Timestamp at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:388)
at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
The rmiregistry can be started correctly, but my RMI server program can't bind my object. Why?