【meshlab】Error details: Some materials definitions were not found, a default whitematerial is used..

显示obj文件报错：

Error details: Some materials definitions were not found, a default whitematerial is used where no material was available

我的obj文件和对应的mtl文件都检查过了没有问题，搜索资料发现原因是：

Meshlab 不允许在文件名中使用空格。

见官网：https://support.pix4d.com/hc/en-us/articles/210069306-Error-in-Meshlab-%22Some-materials-definitions-were-not-found%22