Mbed LPC1768 no longer supported?

Hello,
I thank you for answering my question.
The copying of programs to the board is working.
But when I tried to use the board in mbed studio with os release 6.5.
I updated the board to the latest release and installed the winserial driver although the documentation states that it is not necessary. But only by doing so there is a serial comport available and I got a serial console in mbed studio.
I then tried to use the examples from the manual.
I can only call it a desaster.
There were errors and warnings everywhere. I tried then to use the example code from the header files of the Thread and ThisThread classes. After the necessary changes to chrono values they compiled and I could load them to the board.
But the execution of the program stops in the call to ThisThread::sleep_for(100ms).
I tried to use the debugger, but with no success. It stops immediately after loading with the message: 0006772:ERROR:gdbserver:Unhandled exception in handle_message: No ACK received.
There seems to be something wrong with the implemention of pyOCD for the mbed LPC1768. I read about it in other threads on this forum, but hoped that the announced fixes fot this bug would have been done in the meantime.
So I don’t know how to continue from here.
I think it is somewhat sad and disappointing, especially as this board was the first board that was used with mbed at all and I own it since then.
The documentation in mbed studio is nothing but annoying, so to say.
Even the getting started examples simply don’t work.

Any ideas? Can you point me to a documentation of the RTOS functions and a tutorial with working examples?

Best regards
Andreas

I simply don’