Statement communique

Hi
I am getting such communique on bottom post:
“Extra data
lacandsnw_postmessage:
lacandsnw_twitterhandle:”
How it remove with page?
Example
https://matkaziemia.net/obnizyl-sie-poziom-wod-w-mazurskich-jeziorach-zeglarze-musza-uwazac-zeby-nie-utknac/