D7 - Get Path Alias (URL) from referenced Taxonomy Value
Ok then, here are a two options.

Option 1)


Include your entity reference field.
Use the 'Label' formatter.
Rewrite it's output and to /taxonomy/term/[field_entity_reference-target_id], see screenshot.




This will output the path to the term page as plain text for you to use as you will. You could output this field as a link and attempt the same pattern.

Option 2)
+ Add a relationship to the referenced entity. See screenshots.





Once you add the relationship, add the Taxonomy term: Name field using the relationship. See screenshot.




&lt;> Then configure to use link and rewrite output if desired.