[WiX] Can't link the project with multiple wxs files

The WiXModule.qbs can not complete linking correctly if the project has more than one *.wxs file.

Error:

evaluating prepare script: TypeError: Result of expression 'input' [undefined] is not an object.

This error occurred on line 378 (in the lightLinker rule):

...
var cmd = new Command(ModUtils.moduleProperty(product, "linkerPath"), args);
cmd.description = "linking " + FileInfo.fileName(input.filePath); // <<== here
cmd.highlight = "linker";
cmd.workingDirectory = FileInfo.path(primaryOutput.filePath);
return cmd;
...

Seems, that the "input" property should be as "inputs" or something else, because they has a multiple files, but not a single file.

Please, see attach that reproduced a problem