Error when running snort built-in rules.

Good morning,
I've been getting the following error while running snort against the
built-in rules:


Loading /etc/snort/rules/info.rules:
ERROR: /etc/snort/rules/info.rules:24 unknown rule keyword: rawbytes.
ERROR: /etc/snort/rules/info.rules:24 unknown rule keyword: distance.
ERROR: /etc/snort/rules/info.rules:24 unknown rule keyword: rawbytes.
ERROR: /etc/snort/rules/info.rules:24 unknown rule keyword: distance.
ERROR: /etc/snort/rules/info.rules:24 unknown rule keyword: rawbytes.
ERROR: /etc/snort/rules/info.rules:25 unknown rule keyword: nocase.
ERROR: /etc/snort/rules/info.rules:26 unknown rule keyword: nocase.
ERROR: /etc/snort/rules/info.rules:29 unknown rule keyword: nocase.
ERROR: /etc/snort/rules/info.rules:30 unknown rule keyword: nocase.
ERROR: /etc/snort/rules/info.rules:32 unknown rule keyword: nocase.
ERROR: /etc/snort/rules/info.rules:32 unknown rule keyword: distance.
ERROR: /etc/snort/rules/info.rules:32 unknown rule keyword: nocase.
ERROR: /etc/snort/rules/info.rules:32 unknown rule keyword: within.
ERROR: /etc/snort/rules/info.rules:32 unknown rule keyword: distance.
ERROR: /etc/snort/rules/info.rules:32 unknown rule keyword: distance.
ERROR: /etc/snort/rules/info.rules:32 unknown rule keyword: within.
ERROR: /etc/snort/rules/info.rules:32 unknown rule keyword: distance.
Finished /etc/snort/rules/info.rules:

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