Suddenly Bash has changed my STATUS

I was as usual using bash(terminal) my prompt was green i.e. peter@mx:- it has changed to red.
echo $PATH gives :
/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games; missing ARE :
:/home/peter/testing_scripts and :/home/peter/rhag ; although .bashrc STILL has :
export PATH=$PATH:/home/peter/testing_scripts and export PATH=$PATH:/home/peter/rhag.
Obviously I cannot use any aliases or run any scripts.May I please have some suggestions to remedy this and how could it have happened?

MX Linux 18.3 x64

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