Hi,

 this issue already fixed in 20.7.10556 (rolling).
Seems as you on stable now, wait for update stable or switch (temporary) to rolling:
https://docs.observium.org/updating/#switch-between-rolling-and-stable-trains

Luis Olavarrieta via observium wrote on 09.07.2020 23:45:
I got this error message, please assist

#####  Module Start: neighbours  #####

 o MIKROTIK-MIB          o Trying to discover host 3916mex_clearcom_296 (172.27.3.141) through MNDP (xdp)
Trying v2c community *** [0] ...
No reply on community public using v2c.
Trying v1 community *** [0] ...
No reply on community public using v1.
Invalid arguments passed into function get_port_by_index_cache(). Please report to developers.
 o Trying to discover host sip-t21p_e2 (0.0.0.0) through MNDP (xdp)
Invalid arguments passed into function get_port_by_index_cache(). Please report to developers.
Invalid arguments passed into function get_port_by_index_cache(). Please report to developers.


 



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Mike Stupalov
Observium Limited, http://observium.org