一樣出現
E- *Error* fprintf: argument #1 should be an I/O port (type template = "ptg") at line 0 of file "*stdin*" - nil
E- *Error* fprintf: argument #1 should be an I/O port (type template = "ptg") at line 0 of file "*stdin*" - nil
E- *Error* fprintf: argument #1 should be an I/O port (type template = "ptg") at line 0 of file "*stdin*" - nil