How to fix error caused with "spamassassin --lint" command

Nov 8, 2019
After following your guidelines outlined in your documentation about setting the content based filters I am getting the following error when I type:
"spamassassin --lint" command

Nov 20 22:09:16.337 [4844] warn: rules: failed to run __KAM_SPF_NONE test, skipping:
Nov 20 22:09:16.337 [4844] warn: (Can't locate object method "check_for_spf_none" via package "Mail: [...]:SpamAssassin::perMsgStatus" at (eval 2294) line 19.
Nov 20 22:09:16.337 [4844] warn: )
Nov 20 22:09:16.848 [4844] warn: lint: 1 issues detected, please rerun with debug enabled for more information

Could you please hint me what am i doing here wrong?
Or Should it be ignored?

Thank you
Kindest regards
After following your guidelines outlined in your documentation
Which guidelines exactly?
could you explain what you changed before the error started appearing (added files, changed content of files)

Otherwise we cannot see where the issue is caused.
Cannot reproduce this warning message here with an uptodate system.
Please try to install the latest updates and also update the SpamAssassin rules:
* `apt update && apt full-upgrade`
* `sa-update`


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