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Accepted Answer
Hello,
You can enable those PHP modules by running to following commands:
yum install curl
yum install php-curl
Regarding the getimagesize function, I think that you need to enable allow_url_fopen in your php.ini file. To do that try the following:
Run php -i | grep php.ini to find out the location of your php.ini file
Edit the file with your favorite editor
Look for allow_url_fopen and set it to true
Hope that this helps! Regards, Bobby