Maya constantly display warning in Script Editor and Command Result when using the <attr:> token in the texture file name, making Maya so laggy

[thanhmimi080791]

Hi, when I use <attr:> token for texture path, Maya constantly emerges the ' geometry: could not read STRING parameter "carName" ' Warning and some others as images below, (regardless of my shader detecting the right texture maps, and the render ouput also looks good). And another annoying thing is that in File Path Editor window, although my render detect the right texture maps with <attr:> token, it still displays that my texture is missing. Any idea to fix that? Thank you!

P/s: "carName" is just my custom attribute for token usage