Could not load class: pdofetch from pdotools.pdofetch

Hello. There are mistakes, I do not know what they are related to.tell me

pdoFetch is a class from the extra pdoTools.
This class is for example used by the snippet pdoResources.

In case you upgraded your MODX installation from MODX 2.x to MODX 3, install the newest version of pdoTools for MODX 3.

good evening. no, it costs MODX Revolution 2.8.5-pl