When I first compiled the arm program, I encountered this error. I searched the internet for information and found a solution for this error message, as shown below:
If the error message: the session file 'C: \ User \ USERNAME \ default-1-2-0-0.ses 'could not be loaded ., it indicates that your project file name (and file path) contains some Chinese characters. You need to change the file name (including the file path) to all English characters. Here, we need to give you some suggestions in future programming. In the future, all programming-related things must use English characters, and Chinese characters are definitely not allowed, to avoid incompatibility between compiled programs and tools used (who asked these tools to be made by foreigners ).
PS: if an error occurs on the axd interface, click opentions ------> Configure target -------> armul -------> Configure -------> OK -------> OK, in this way, the default axd initial interface can be restored.