Where do I find the block id for Twig Tweak module In order to print a block in a twig file when using the Twig Tweak module you require the block id, but nothing I am trying will work and I get the message that - 

This block is broken or missing. You may be missing content or you might need to enable the original module.
I think your block id is a machine name of a block that you added here: Admin > Structure > Block layout (/admin/structure/block). 

When you edit some block you will see the machine name. Besides, a disabled block is also allowed.