Added various tag photos and descriptions.

src/web/error.js

@@ -1,10 +1,15 @@
 'use strict';
 
+const argv = require('../argv');
 const logger = require('../logger')(__filename);
 
 function errorHandler(error, req, res, _next) {
 	logger.warn(`Failed to fulfill request to ${req.path}: ${error.message}`);
 
+	if (argv.debug) {
+		logger.error(error);
+	}
+
 	if (error.httpCode) {
 		res.status(error.httpCode).send(error.message);