The most common issue of OpenOCD error messages originates from the fact, that the application core is not started. The text visible in the OpenOCD console is as follows:
Info : netx90.app: hardware has 0 breakpoints, 0 watchpoints
Info : netx90.comm: hardware has 6 breakpoints, 4 watchpoints
The issue, that the application core seems to have 0 breakpoints arises from the fact, that it is was not provided with a core clock signal.