fms-api-client - unable to verify the first certificate, local server

[0-don]

I am using the filemaker data api 18 with nodejs v14.15.4 and latest fms-api-client package.

I have a local filemaker server which doesnt have a real SSL certificate, when I try to use the package I always get a problem with the ssl verification since Filemaker server comes with a default SSL certificate which is not valid I get this error message:

{ code: 'UNABLE_TO_VERIFY_LEAF_SIGNATURE', message: 'unable to verify the first certificate' }

I found a workaround but its not ideal it works but I always get a Nodejs warning message.

process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0

I think there is a real workaround which I didnt find yet in the fms-api-client package, I tried to use an option from the library which didnt seem to work.

agent: {rejectUnauthorized: false}

[0-don]

installed a lets encrypt ssl now it works fine