Two Sony apps crashing on boot-up

[Andy_P2002]

Recently, whenever I restart my Z5C, wirthin a few seconds I get the message:

com.sonyericson.crash monitor has stopped.

This is followed almost immediately by:

com.sonymobile.rcahandler has stopped.

Phone has all standard updates and no weirdness done to it.

Any ideas what these two apps are for (I guess the first one monitors crashes!) and how to stop them crashing?

[Gitlee]

Same problem with my Sony Xperia Z5 for a while now. Tried it with disableling the stamina mode as someone suggested and restarted the phone but both messages popped up again. Also had to replace the accu after one year of use as it took ages to reload and was empty very fast, not talking about getting very hot while just using apps like Facebook....