I have similar issue after firmware upgrade. Here is what Tesla answer - short term revert back to 22.41.2 firmware:
"We are sorry to hear you are experiencing charging session interruptions with your Tesla Wall Connector. Our teams are working on a solution at the moment. Please note that the car's charging rate is similar to the full speed as the interruptions are short. Thank you for your patience, we are working on implementing a fix as soon as possible. We have seen this to be temporarily resolved if you revert back to a previous firmware version (attached). You can use the offline firmware update process to upload the attached file."