New server, custom blocks all give “Your site doesn’t include support for the xxx block”

Argh, totally my error – I’m using ACF Pro to manage our custom blocks, but I’d only installed the free (not Pro) version on the new server, so block registration was not completing. Installing ACF Pro fixed the issue.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)