A variety of fixes and a change in the way errors are handled.

commands/random/math.js

@@ -21,9 +21,9 @@ module.exports = class MathCommand extends Command {
         try {
             const solved = math.eval(expression);
             return message.say(solved)
-                .catch(() => message.say(':x: Error! Invalid statement!'));
+                .catch(() => message.say('Invalid statement.'));
         } catch (err) {
-            return message.say(':x: Error! Invalid statement!');
+            return message.say('Invalid statement.');
         }
     }
 };