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I noticed today tat image optimisation isn’t working automatically on upload and I can’t get the bulk optimiser to do anything either.
Looking at the history of my images it was working fine until the end of October so perhaps something happened after an update.
I’ve deactivated all plugins and reverted to a core theme (TwentyFifteen) and the issue is still present.
Looking in the postmeta for my images there is an error code of 451 for Optimus – any ideas on the cause and how to fix this?