handle null values returned by raw cache (#263)

* handle null values returned by raw cache

* 2.23.8

Author: kbarbounakis

data-cache.js

@@ -204,6 +204,9 @@ class DefaultDataCacheStrategy extends DataCacheStrategy {
             try {
                 void self.rawCache.get(key, (err, res) => {
                     if (typeof res !== 'undefined') {
+                        if (res === null) {
+                            return resolve(res);
+                        }
                         if (Object.prototype.hasOwnProperty.call(res, key)) {
                             return resolve(res[key]);
                         }

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@themost/data",
-  "version": "2.23.7",
+  "version": "2.23.8",
   "description": "MOST Web Framework Codename Blueshift - Data module",
   "main": "index.js",
   "scripts": {