default or selected kernelversion does not have config value CONFIG_MAC80211_VERBOSE_MPATH_DEBUG.
Result is shown for kernelversion 5.3.7

Verbose mesh path debugging

configname: CONFIG_MAC80211_VERBOSE_MPATH_DEBUG

Linux Kernel Configuration
└─>Networking support
└─>Wireless
└─>Select mac80211 debugging features
└─>Verbose mesh path debugging
In linux kernel since version 3.3 (release Date: 2012-03-18)  
Selecting this option causes mac80211 to print out very
verbose mesh path selection debugging messages (when mac80211
is taking part in a mesh network).
It should not be selected on production systems as those
messages are remotely triggerable.

Do not select this option.