I just updated Spacemacs and now I can’t load a file into a cider repl due to this errror: “Symbol’s value as variable is void: helm-bookmark-map”. Can anyone help as I can’t get any work done.

Updated to what?

Sorry, “Update Packages”

For anyone else, my workaround was to use load buffer (, s b) instead of load file (C-c C-l).

To take care of it permanently add (require 'helm-bookmark) to your .spacemacs file’s dotspacemacs/user-config() section as suggested here: https://github.com/syl20bnr/spacemacs/issues/9549#issuecomment-328284014