Ok, then you simply don't have the package installed
Go download and install the LTE package from https://mikrotik.com/download
(see pictures). Unzip the file, drag & drop (ignore the version type on my screenshot) it in winbox, and then reboot. Should work after that.
Better to update all to 6.38.1, as well so that all packages/ system are the same version. Just leave out the packages you don't need....like gps, lcd ..ect
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