How to fix "Error creating thumbnail. Error code 127."

[Shinkakakaka]

I have been trying to upload a image of Fissure in M01 to add to the move page. While I think I successfully uploaded it, I keep getting this error message: "Error creating thumbnail: /bin/bash: /usr/bin/convert: No such file or directory Error code: 127". So, did I not upload it at all? Did I upload it wrong? Or it is something else, like file size?