The curl.cainfo is pointing to the certificate file. If you don’t have one at the path indicated above, you can change the path to point to the correct location. Alternatively, you can download a certificate from https://curl.haxx.se/docs/caextract.html (direct link) and paste it in the folder indicated by the above path and point the curl.cainfo to the downloaded file. Note that the file might have a different name, don’t forget to rename it if necessary.