Good morning, I am attaching the complete link of the project.
I comment that I present problems for the DATATABLE, bootstrap-maxlength.html and recently with vis-timeline I had to manually add in plugin.scss the following @import "~ vis-timeline / dist / vis-timeline-graph2d.min.css";
and in js add require ('vis-timeline / dist / vis-timeline-graph2d.min.js');
and Select2
I do not know if it is correct, do it like this?
The main detail is that it doesn't load the styles correctly and in the js files, I have to manually call them in each .js adding require('datatables.net');
You have to update the webpack.mix.js with the latest version of Metronic Laravel. In the recent version, we have updated the way how the plugin's imported, including datatable. You can try to update only these assets folders only.