fix(xo-server): fix running replication job (#6437)

Introduced by 2d6b827fd

CHANGELOG.unreleased.md

@@ -23,4 +23,5 @@
 
 <!--packages-start-->
 
+- xo-server patch
 <!--packages-end-->

packages/xo-server/src/xo-mixins/backups-ng/index.mjs

@@ -229,11 +229,17 @@ export default class BackupNg {
               }
             }),
           ])
-          if (Object.keys(remotes).length === 0) {
+
+          // Fails the job if all remotes are disabled
+          //
+          // TODO: integrate each failure in its own tasks and still proceed
+          // with other tasks like rolling snapshot and replication.
+          if (remoteIds.length > 0 && Object.keys(remotes).length === 0) {
             const error = new Error(`couldn't instantiate any remote`)
             error.errors = remoteErrors
             throw error
           }
+
           // update remotes list with only the enabled remotes
           job.remotes = {
             id: {