Stores configuration - I am a beginner help!

[Minne]

Hello,

I uploaded Magento (with sample shop) with Installatron (1-click installation). And when I try to fill in the Stores -> configurations data, store name etc (not all the field though: there is for instance this VAT number field and I don't know that so I left it blank.) I get this message. And I don't know how I get a name for my store. 

I am just testing this Magento the first time, and I am having problems right away. I would like to create a test shop with it. Please help! Thank you!

[Suman Kar]

You need to reindex all your index elements.

Follow bellow steps

1. Go to your root folder of your magento2 installation directory

2. Execute below command to run the indexing 

php bin/magento  index:reindex

Output

Design Config Grid index has been rebuilt successfully in 00:00:00
Customer Grid index has been rebuilt successfully in 00:00:00
Category Products index has been rebuilt successfully in 00:00:00
Product Categories index has been rebuilt successfully in 00:00:00
Product Price index has been rebuilt successfully in 00:00:03
Product EAV index has been rebuilt successfully in 00:00:02
Catalog Search index has been rebuilt successfully in 00:00:02
Stock index has been rebuilt successfully in 00:00:00
Catalog Rule Product index has been rebuilt successfully in 00:00:02
Catalog Product Rule index has been rebuilt successfully in 00:00:00

[ShoaibRehman89]

@Minne

Magento’s cache management system is an easy way to improve the performance of your site. If the cache is enabled, whenever you make a change in magento config/cms blocks or deploy new static resouces, the cache needs to be refreshed.  Whenever a cache needs to be refreshed, a notice appears at the top of the workspace to guide you through the process. 

I'd suggest that you disable cache whilst you are playing around with magento so you don't have to refresh it every time you make a change. 

To do so, go to System > Cache Management > Select All > Disable.

You can read more about Magento cache on Magento dev docs: http://docs.magento.com/m2/ce/user_guide/system/cache-management.html