TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined

[githoniel]

Bug

I meet bug in title when compile with less error.

Version:

less: 3.13.1
less-loader: 6.20

What I found

my less option is

error is

I dont know why there is no more info.

https://github.com/webpack-contrib/less-loader/blob/78befcdf71c34231efefd977cfb107844eeffcbc/src/index.js#L45-L53

We check lessError.filename for existed but do not do this in constructor of LessError

https://github.com/webpack-contrib/less-loader/blob/78befcdf71c34231efefd977cfb107844eeffcbc/src/LessError.js#L11

[alexander-akait]

Fixed, anyway please update to the latest version (^7.2)