fix: Cannot read property 'startsWith' of undefined (#1358)

* fix: Cannot read property 'startsWith' of undefined

* Update search.js

* update

* Update search.js

Author: sy-records

src/plugins/search/search.js

@@ -203,7 +203,7 @@ export function init(config, vm) {
   let namespaceSuffix = '';
 
   // only in auto mode
-  if (isAuto && config.pathNamespaces) {
+  if (paths.length && isAuto && config.pathNamespaces) {
     const path = paths[0];
 
     if (Array.isArray(config.pathNamespaces)) {