make check not working for me

[hgputnam]

Sorry, If forget how this was supposed to be set up. I am missing something on my Ubuntu 20 workstation:

$ make check
cd docs; make spell
make[1]: Entering directory '/home/hputnam/repositories/C4/docs'
*** spell:
Error in loadNamespace(x) : there is no package called ‘spelling’
Calls: loadNamespace -> withRestarts -> withOneRestart -> doWithOneRestart
Execution halted


SUGGESTION: If you believe these are correctly spelled, add them to 'docs/WORDLIST'

make[1]: *** [Makefile.checks:21: spell] Error 1
make[1]: Leaving directory '/home/hputnam/repositories/C4/docs'
make: *** [Makefile:13: spell] Error 2

What do I need for the spelling check again?

[HenrikBengtsson]

See https://github.com/UCSF-CBI/c4#spell-checking