The php function curl is not installed

I have the same issue as this topic: https://ww.wp.xz.cn/support/topic/the-php-function-curl-is-not-available-on-your-server/

Word press on a Raspberry pi and getting the error “The PHP function CURL is not available on your server, which is required. Please contact your hosting provider.” I have curl installed and working so I’m wondering what else i have to do.