Provide an Appropriate Response $$\log _ { 4 } 3 y = \log _ { 4 } 3 \cdot \log _ { 4 } y$$

Provide an appropriate response.
-Explain the error in the following: $$\log _ { 4 } 3 y = \log _ { 4 } 3 \cdot \log _ { 4 } y$$