function jetpack_register_block()

I have 2 subsites in a wordpress multisite install that have the exact same theme and the exacst same plugins.

When I activate jetpack on one of the sites I get the error below

Call to undefined function jetpack_register_block() in /home/repam/public_html/wp-content/plugins/jetpack/modules/shortcodes/email-subscribe.php on line 72

The other site I get no errors at all.
I would like to activate the Jetpack network wide but cannot due to this error.

I tried switching themes on the site with the problem and that did not fix the error.