Sometimes, instead of showing the HTTP status code ‘0’ error message, the log shows the java.lang.NullPointerException. This error seems to be caused when the MID Server is not defined in the configuration for a given Nexthink Engine and such Engine is not accessible. The error shown is:
To fix this, please make sure to define a proper MID Server to reach the Nexthink Engine and check that it is up and running. Please also check that the Engine is up and running.