Cannot activate/deactivate features without error message

Replies: 0

I’m trying to activate/deactivate a number of features on JETPACK. But I get a “xxxx (the feature) failed to activate/deactivate. TypeError: Failed to fetch.” message when I do so.

I have a multisite setup. Jetpack is network-activated and sub-site admins (that’s me) are allowed to connect to Jetpack themselves.

This error occurs in all the sub-sites.

BTW, this is a new-occurring problem — either/both after the recent WP and/or plugin updates.

Any and all assistance very welcome.