What was a negative side to having the rest of the world (Meaning Europe) learn of Mali through the travels of Mansa Musa?

Probably because when more people learned of Islam and were influenced by Musa (RA), less people would be Christian and become converts to Islam, most likely because they would associate his immense amount of wealth with being Muslim, and seeing how most of Europe back then were Christian and opposed Islam, they'd probably see this as a blow to them. They could probably associate his vast empire as being the effect of converting to Islam as well.

what are the issues?

from my own personal expirence food stamps has alot this makes it eaiser so we can affod bills and so we can life a better lifestyle not needing to worry about paying actual money to buy food since most people spend 100-300 dollars a month on food so this alot so we can afford other bills and other stuff we need