Fix electon error

common/db.js

@@ -66,7 +66,8 @@ class KaraDatabase {
                 "language",
                 "author",
                 "title",
-                "source"
+                "source",
+		"available"
             ] // fields to return with search results
           })
         logger.info('db', 'Create database from file ' + config.content.database.path);
@@ -98,7 +99,7 @@ class KaraDatabase {
                             category AS cat,
                             (song_type || song_number) AS type,
                             language, author_name AS author,
-                            song_name AS title, source_name AS source
+                            song_name AS title, source_name AS source, available
                           FROM kara`;
         function __getRecords(db) {
             return new Promise(resolv => {

package.json

@@ -16,7 +16,7 @@
     },
     "dependencies": {
         "ejs": "^3.1.5",
-        "electron": "^26.1.1",
+        "electron": "^15.1.1",
         "electron-ejs": "^1.2.1",
         "electron-prompt": "^1.6.2",
         "express": "^4.17.1",