Fix issue with non-existing users Rank

Implement a fix for cases of non-existing users causing error on data return

app.js

@@ -420,15 +420,21 @@ app.get('/getRank/:user', async function (req, res) {
 		var userDelegations = await activeDelegationFunc(req, res);
 		//console.log(userDelegations.steem_power);
 
-		var delegation_score = utils.calcScore(delegation_rules, config.delegation_factor, parseFloat(userDelegations.steem_power));
+		var delegation_score = 0;
+		if (userDelegations != null){
+			delegation_score = utils.calcScore(delegation_rules, config.delegation_factor, parseFloat(userDelegations.steem_power));
+		}
 
 		user_rank += delegation_score;
 
 		//grab user token count
 		var userTokens = await grabUserTokensFunc(req,res);
 		//console.log(userTokens.tokens);
 
-		var afit_tokens_score = utils.calcScore(afit_token_rules, config.afit_token_factor, parseFloat(userTokens.tokens));
+		var afit_tokens_score = 0;
+		if (userTokens != null){
+			afit_tokens_score = utils.calcScore(afit_token_rules, config.afit_token_factor, parseFloat(userTokens.tokens));
+		}
 
 		user_rank += afit_tokens_score;