Class "\CB\Plugin\AntiSpam\CBAntiSpam" not found

An error has occurred.

0 Class "\CB\Plugin\AntiSpam\CBAntiSpam" not found

This error appears every time I want to access CB_AntiSpam plugin. The only thing I can do is to click Return to Dashboard button.
It happened after I changed the access level from public to guest.
BTW, I am logged in on the backend as super user.

How can I regain access to the plugin settings?
 

Some additional info: curios enough, captcha is showing characters on front end and sound works too. CB_AntiSpam version is 6.2.0.
I need to regain access to the plugin settings from backend.
Your help is appreciated.

What CB AntiSpam plugin are you trying to access exactly and where? If you're trying to access its Joomla plugin then sounds like the CB plugin isn't installed.

It is Community Builder's CB_AntiSpam plugin, accessed from Community Builder/Control Panel/Plugin Management.
It is version 6.2.0, Installed, Published and Access Level is now Guest
 

The Access Level is probably the issue. That controls who the plugin will load for. Do not use that as a means of restricting who has to supply captcha as there's parameters for that at the captcha usage. Select its checkbox in CB > Plugin Management then use the Batch Tools at the top and reset it back to Public to see if your issue goes away.

Thanks, I was able to regain access via batch tools/Select access to Public.
Anyway, are you able to replicate the issue? It seems to me that this is a coding issue (loosing access to a plugin settings after a mistake)

Thanks again.