https://gimp.org/gimp_versions.json is redirected to www.gimp.org
Please update the URL https://gimp.org/gimp_versions.json to https://gimp.org/gimp_versions.json to avoid the redirects.
$ curl -I https://gimp.org/gimp_versions.json
HTTP/2 301
date: Tue, 08 Sep 2020 15:31:57 GMT
server: Apache/2.4.34 (Red Hat) OpenSSL/1.0.2k-fips
location: https://www.gimp.org/gimp_versions.json
content-type: text/html; charset=iso-8859-1
set-cookie: e2dd26aa44fe563265401b0e933d5e0e=2d6ba2980c751834a53908e7da39dfcd; path=/; HttpOnly; Secure
cache-control: private
$ curl -I https://www.gimp.org/gimp_versions.json
HTTP/2 200
date: Tue, 08 Sep 2020 15:32:02 GMT
server: Apache/2.4.34 (Red Hat) OpenSSL/1.0.2k-fips
strict-transport-security: max-age=31536000
x-frame-options: SAMEORIGIN
x-xss-protection: 1; mode=block
x-content-type-options: nosniff
content-security-policy: default-src 'none'; img-src 'self'; style-src 'self'; script-src 'self' https://www.openhub.net; font-src 'self'; child-src 'self' https://www.openhub.net https://www.youtube.com https://www.youtube-nocookie.com; object-src 'none'; media-src 'self' https://download.gimp.org https://www.mirrorservice.org; base-uri 'self'; form-action 'self' https://www.paypal.com https://gitlab.gnome.org; frame-ancestors 'self';
referrer-policy: same-origin, strict-origin-when-cross-origin
last-modified: Wed, 15 Jul 2020 18:40:14 GMT
etag: "845a-5aa7f4123ff80"
accept-ranges: bytes
content-length: 33882
content-type: application/json
set-cookie: 8402575261cbbd4f9b6b4b14a5235594=2d6ba2980c751834a53908e7da39dfcd; path=/; HttpOnly; Secure
cache-control: private