Hi,
sometimes it happens to add addons in bulk mode, selecting several modules at once and it might happen that one of them has problems and crashes the whole odoo (white page) not allowing to do anything at all.
My fix in this case is to remove the included addon (with submodules) and start to uninstall one by one (this is something that I couldn't find as well..seems not to be a way to uninstall multiple addons, there is for installing but not for uninstalling?) till I find the culprit addon module.
This is time consuming and surely not optimal.
I want to ask to you who have more experience than me with Odoo, how can you directly spot the bad addon and just uninstall it.
Kind regards