Serial data source causing crash

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Hi all,
I just deleted a data source (modbus IP) that I was using for testing purposes. Mango then crashed/shut down and now wont load. It gets to 40/50% and gives and error Unable to load /mango/status/ status:0

The cmd window closes and there are no errors in ma.log.
No other changes were made to mango or java.

Mango version is 3.7.7.
Java Version is AdoptOpenJDK 11.0.6.10

EDIT: This appears to be a serial/com port issue. I have set up some modbus serial data points but when I enable the data source Mango crashes. It wont restart until I delete the database. No errors in ma.log, it just crashes when starting data sources.

EDIT 2: I have tried a USB to RS485 converter in case it was a com port issue but it is also crashing Mango when I enable the data source. I have confirmed the converter is working using ModbusPoll on the same PC and slave device.

Any Ideas? Thanks

Rob

Hi Rob

Can you have a look if there is a pid_error file in your mango directory after the crash.

Hi Craig, There is indeed! WIll I post it?

Hi Rob can you email it to us.

Done. Thanks Craig.

I'm getting this as well.

I restored from a windows crash and using the recommended AdoptOpenJDK JDK. I was using the old JDK from Oracle prior. I now get this error and I know the port works fine as I can communicate using a modbus master tool.

@chrapchp Have you tried going back to Oracle JDK? I ended up using a Modbus gateway.

@robmalone Mango did not even what to start up with JDK 1.14. I did recover the old jdk I was using on the crashed system and will revert to that.

thx