NPM SSL registration is not possible

I’m using Synology Nas.
I’m trying to register SSL in Nginx Proxy Manager, but I get the following error.

Cloudflare API token

dns_cloudflare_api_token = 012asdf

CommandError: WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘NewConnectionError(’: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution’)‘: /simple/cloudflare/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘NewConnectionError(’: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution’)‘: /simple/cloudflare/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘NewConnectionError(’: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution’)‘: /simple/cloudflare/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘NewConnectionError(’: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution’)‘: /simple/cloudflare/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘NewConnectionError(’: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution’)': /simple/cloudflare/
ERROR: Could not find a version that satisfies the requirement cloudflare (from versions: none)
ERROR: No matching distribution found for cloudflare

at /app/lib/utils.js:16:13
at ChildProcess.exithandler (node:child_process:430:5)
at ChildProcess.emit (node:events:518:28)
at maybeClose (node:internal/child_process:1105:16)
at ChildProcess._handle.onexit (node:internal/child_process:305:5)