Fix

lib/routes/admin.js

@@ -185,36 +185,43 @@ module.exports = function(crowi, app) {
       return res.redirect('/admin');
     }
 
-    search.deleteIndex()
-      .then(function(data) {
-        if (!data.errors) {
-          debug('Index deleted.');
-        }
-        return search.buildIndex();
-      })
-      .then(function(data) {
-        if (!data.errors) {
-          debug('Index created.');
-        }
-        return search.addAllPages();
-      })
-      .then(function(data) {
-        if (!data.errors) {
-          debug('Data is successfully indexed.');
-        } else {
-          debug('Data index error.', data);
-        }
-
-        //return res.json(ApiResponse.success({}));
-        req.flash('successMessage', 'Successfully re-build index.');
-        return res.redirect('/admin/search');
-      })
-      .catch(function(err) {
-        debug('Error', err);
-        req.flash('errorMessage', 'Error');
-        return res.redirect('/admin/search');
-        //return res.json(ApiResponse.error(err));
+    Promise.resolve().then(function() {
+      return new Promise(function(resolve, reject) {
+        search.deleteIndex()
+          .then(function(data) {
+            debug('Index deleted.');
+            resolve();
+          }).catch(function(err) {
+            debug('Delete index Error, but if it is initialize, its ok.', err);
+            resolve();
+          });
       });
+    }).then(function() {
+      search.buildIndex()
+        .then(function(data) {
+          if (!data.errors) {
+            debug('Index created.');
+          }
+          return search.addAllPages();
+        })
+        .then(function(data) {
+          if (!data.errors) {
+            debug('Data is successfully indexed.');
+          } else {
+            debug('Data index error.', data);
+          }
+
+          //return res.json(ApiResponse.success({}));
+          req.flash('successMessage', 'Successfully re-build index.');
+          return res.redirect('/admin/search');
+        })
+        .catch(function(err) {
+          debug('Error', err);
+          req.flash('errorMessage', 'Error');
+          return res.redirect('/admin/search');
+          //return res.json(ApiResponse.error(err));
+        });
+    });
   };
 
   actions.user = {};