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I can't make import!

you have to increase increase upload_max_filesize and post_max_size https://www.awesomescreenshot.com/image/3368177/fb77802afb22c080b870c242c72bd718

Switch on ZipArchive extension

http://stackoverflow.com/questions/23487877/error-wrong-export-slider-file-format-this-could-be-caused-because-the-ziparch

We advice to use such settings

htaccess Method

Some people have tried using the htaccess method where by modifying the .htaccess file in the root directory, you can increase the maximum upload size in WordPress. Open or create the .htaccess file in the root folder and add the following code:

1php_value upload_max_filesize 64M
2php_value post_max_size 64M
3php_value max_execution_time 1000
4php_value max_input_time 1000

Remove json restriction:

I contacted siteground and they replied me the below (its just for reference):

"It is actually not a server-side restriction but rather a WordPress security feature known as "filtered upload" which does not allow the upload of certain file types. To resolve this I have added the following code to the wp-config.php file of your application:

Code:

define('ALLOW_UNFILTERED_UPLOADS', true);

and now the upload of the .json file is working as intended"

The problem is solved.