err & err.message instead of err.message

middleware/408.js

@@ -2,7 +2,7 @@
 // handle time out errors
 function middleware(err, req, res, next) {
   res.header('Cache-Control','no-cache');
-  var error = err.message ? err.message : err;
+  var error = (err && err.message) ? err.message : err;
   
   if( res.statusCode === 408 || (error.toLowerCase().indexOf('request timeout') !== -1) ){ 
   	res.status(408); 

middleware/500.js

@@ -4,7 +4,8 @@ var logger = require( 'pelias-logger' ).get( 'middleware-500' );
 function middleware(err, req, res, next) {
   logger.error( 'Error: `%s`. Stack trace: `%s`.', err, err.stack );
   res.header('Cache-Control','no-cache');
-  var error = err.message ? err.message : err;
+  var error = (err && err.message) ? err.message : err;
+
   if( res.statusCode < 400 ){ res.status(500); }
   res.json({ error: typeof error === 'string' ? error : 'internal server error' });
 }