'Error Parsing Plugin' when running any Salesforce DX commands

[abd3]

FYI, I haven't looked into what the exact issue is here, but for the last few weeks my sfdx commands have been generating this error:

 ▸    Error parsing plugin
 ▸    /Users/[myUser]/.local/share/sfdx/plugins/node_modules/salesforcedx
 ▸    Class extends value undefined is not a constructor or
 ▸    null

The only plugin I have installed is this waw plugin. I tried updating it, but it looks like I'm at the latest version. When I uninstalled the plugin (I'm not actively using it for anything at the moment), the error went away.

I reinstalled the plugin and the error did not return. This may be an issue unique to my system, but I'm putting this here in case anyone else experiences it