Error

{# I'd like to use ``build.error|urlize`` here, so we can have nice links. However, this is not possible because we are using `data-bind="text: error"` which means that Knockout.js will use the `.error` attribute to fill the content of this tag dynamically. #} One or more submodule URLs are not valid: ['webext'], git/ssh URL schemas for submodules are not supported.