Como não há comunicação entre a loja e a operadora do cartão, não sei se existe bloqueio no servidor nas comunicações.
Plugin instalado corretamente; Dependências instaladas corretamente.
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
Hello,
I would recommend following the steps here on how to troubleshoot common Apache issues on Linux Server:
https://www.digitalocean.com/community/questions/how-to-troubleshoot-common-apache-issues-on-linux-server
There should be more information in your logs which could help you with further troubleshooting rather than the generic 500 error.
Regards, Bobby