Cache instance is successfully notified about the change, but has not yet started content update

Hi Experts,

I'm facing a problem with our PI 7.4 Java only system where by the Mapping Runtime Cache is not getting updated.

I have already tried a full CPA Cache refresh and this did not help.

I also tried to a Mapping Runtime Cache Refresh through this screen:

However this only gives me a 500 Internal Server Error.

Any help would be much appreciated.

Thanks,

Krishneel