Wrong "accepted solution" shown
Here's a thread:
https://community.st.com/t5/stm32-mcus-products/nucleo-144-no-pins-in-cn11-and-cn12/m-p/612257
Here's what the top of the page looks like. Note that the "accepted solution" shown doesn't have the green border, and doesn't appear to have been selected by the OP as the answer.

Another solution below does have the green border and appears to be the correct "solution" per the OP.

Note that the "Go to solution" link goes to the incorrect solution.
