Here the trancript i talk to my hosting provider

Provider : Thank you for the detailed information provided, I will present your problem to the relevant team for better handling and it may take time. Please wait for the update, we will inform you again soon. If you want to leave this chat, don’t worry because we will provide updates via registered email notifications.

Provider : Thank you for being willing to wait. Introducing, I am Saliha who will continue your conversation with my previous colleague. Regarding your problem, it is still in the process of being checked. If there is an update, I will inform you right away.

Provider : Sorry, I’m currently taking more time to do further checking. Please brother’s willingness to wait.

Me : ok

Provider : Thank you for being willing to wait. After I checked, your files and root directory are correct.

Provider : I see that in the subdomain inv root directory there is no admin folder or index.php file so a 404 error occurs.

Provider : You don’t have to worry, you can add an index.php file so you can access the subdomain. The error occurs because the index.php file is unreadable. Please do check from your side.

Provider : In general, the 404 error is caused by the system not reading an index.php file. The cause is either from the absence of the index.php file or the routing settings to the location of the file. So that it can be ascertained that the routing from the moment of access (subdomain/admin) has led to the location of the index file or the desired destination. Because if from the current condition the system reads there is no index file or admin menu in the subdomain root directory.

Me : but it really worked before… 1 month was fine… suddenly error 404

Provider : For further checking, would you mind creating the admin folder and index.php file that I mentioned earlier?

Me : the index.php file already exists from the start

Provider : For that file, it already exists and is in the root directory of its subdomain (inv folder). However, when accessing the current subdomain, inv.arthawine.com is immediately redirected to inv.arthawine.com/admin (reading the admin folder directory in its inv folder) where currently the admin folder does not exist. So that when accessing inv.arthawine.com/admin it is not directed to index.php in the inv folder but looks for the admin folder in its inv folder. This is what causes the 404 error. Please be able to re-check the routing on the website framework or contact the IT support team or web developer.

Me : weew your IT language is cool… but explain why yesterday didn’t have a problem…

Me : it’s only been 1 hour it’s been a problem since it was installed

Provider : In connection with this, it has not been able to determine the location of the problem because from the hosting side there are currently no problems and it has entered into website development. For additional information the 404 error could be caused by:

1. Invalid or missing file or folder location and the system failed to read an index file
2. The routing configuration is generally located either in the website script or in the .htaccess file. Generally, if the URL and path index location are different, you will need a routing function so that access can be redirected

Me : so I have to create a folder called admin then all files are moved into that folder?

Provider : Regarding this, you can consult with your IT staff because this is already included in web development. The addition of the index.php file is a checking procedure to ensure that the rooting on the subdomain is connected to inv.arthawine.com/admin or the subdomain directory inv.arthawine.com. If you like, I will help to check it from my side

Me : please check

Provider : Thank you for being willing to wait. After I did an experiment to make the index file (experimental) accessible properly.

Provider : Here is what it looks like when I try to access inv.arthawine.com:

Provider : Please do check from your side. Saliha’s profile I just wanted to make sure, are you still online and connected to me and is there anything else I can help you with? ?

ME : if so what is the solution? should i move the files that have been created to the admin folder?

Provider : This depends on the settings on your website. If you really want to point the subdomain to inv.arthawine.com/admin, then you can add data to the admin directory. However, if you want to redirect inv.arthawine.com then you can double check the htaccess and index. It’s a good thing to do. As additional information, our assistance is quite limited regarding website creation issues, because basically Niagahoster is a web hosting and domain sales company.

Hello,

The links are showing 404 not found error. Please make sure that you have uploaded the files to correct directory. Once uploaded, you should be able to access the installer as per instructions in the documentation.pdf

Thank you

this SMA is work properly around 1 month ago… everyday i update by sales, quantity balancing and etc… but since 1 hr ago my app can’t access said error 404… i dont do anychange at server file

Hello,

If it was working, then you need to check with your server admin. I suspect, the files are moved or deleted.

Thank you

i try to re install apps from new download from themeforest.com then i install … succed but still error 404

Install with old database and also try install new database… still same result… 404 Not Found

Hello,

Please make sure that you have uploaded the .htaccess file. If yes, please take the screenshots of the upload files (including .htaccess) and the contents of the .htaccess file.

The FAQ for 404 from the documentation.pdf

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Why am I getting 404 Not Found error after installation?

Please

1. make sure that your apache mod_rewite is enabled
2. check that .htaccess file is successfully uploaded and exists in the main directory of SMA
3. base_url in app/config/config.php

If you are using godaddy, please visit the codeigniter official guide here. You might need to check and modify you .htaccess files too.