fix: JSON fields handling for MariaDB

server/models/settings.js

@@ -13,17 +13,20 @@ module.exports = class Setting extends Model {
   static get jsonSchema () {
     return {
       type: 'object',
-      required: ['key', 'value'],
+      required: ['key'],
 
       properties: {
         key: {type: 'string'},
-        value: {type: 'object'},
         createdAt: {type: 'string'},
         updatedAt: {type: 'string'}
       }
     }
   }
 
+  static get jsonAttributes() {
+    return ['value']
+  }
+
   $beforeUpdate() {
     this.updatedAt = new Date().toISOString()
   }