I have added a servo to the M210 and used the expansion ports on the back of the drone to activate it. This all worked fine until now that I cannot save or load the local configurations. When trying to load the config, it says that loading failed. I have no idea what's causing this, nor how to fix it. Any suggestions?Thanks in advance

Hello, there. Would you like to tell me that whether this issue occurred after you changed some settings or updated APP or others?