Hello @lucassquadros
I think there is might be requirements and server configuration issue that's why the issue is coming in the installation.
You can follow the below links.
https://devdocs.krayincrm.com/1.x/introduction/requirements.html#server-configuration
https://devdocs.krayincrm.com/1.x/introduction/installation.html#install-using-composer
Thanks & Regards