Invalid file name: must contain only [a-z0-9_]

Invalid file name: must contain only [a-z0-9_.]
Invalid file name: must contain only [a-z0-9_.]


报这个错请看文件名不能有大写，换句话说它只支持小写的a到z、0到9、下划线“_”和小数点“.”。否则就报错。至于为什么我也不得而知。