PHP 7.0.x, PHP 7.2 or PHP 7.3 (64 bit version) (No longer support for 5.5 / only some of 5.6)
MySQLi 5.5 (5.6 suggested)
upload_max_filesize = 4M / or more
memory_limit = 128MB / 256MB suggested
max_execution_time = 180 / 300 suggested
PHP upload_max_filesize = 4M / or more
Magic Quotes GPC - Off
cURL library - your server must work with curl or url_fopen.
OpenSSL - must be enabled.
PHP file_get_contents() function - must be available/unlocked.

 

These can be changed in you php.ini file.