Bundles Building /@@resourceregistry-controlpanel in Plone 5.2

Seems like building bundles is broken (again) in Plone 5.2
For me, the building just 'keeps on forever'
Probably due to a javascript error: TypeError: undefined is not an object (evaluating 't.window.requirejs.optimize')

Can anyone confirm this?


Can I rebuild from the command line ?

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