Nyx unable to read tor's authentication cookie

Upagraded to Mint 19 from 18.3 and unable to use arm anymore. Installed Nyx and receiving the following error:

We were unable to read tor's authentication cookie...

Path: /run/tor/control.authcookie Issue: Authentication failed: unable to read '/run/tor/control.authcookie' ([Errno 13] Permission denied: '/run/tor/control.authcookie')

ControlPort 9051 CookieAuthentication 1

Hope you can assist. Thanks

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