What can cause a '404 Not Found' error when I try to run an init script against an app deployed on Daml Hub?

The script works against Sandbox running with the same app. The first create command of the script which causes the error works when I issue it with Postman.

The error message is rather cryptic:

Exception in thread "main" com.daml.lf.engine.script.ScriptF$FailedCmd: Command submit failed: Request to /v1/create with Some(<request body>) failed with status 404 Not Found: List()
Daml stacktrace:
submit at 81afc9ae8c5953ce31e7c572302178f98135220e84940618a1f4c5edafc00fc8:InitWorkflow:36
	at com.daml.lf.engine.script.Runner.$anonfun$runWithClients$10(Runner.scala:444)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:439)
	at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:53)
	at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(ForkJoinExecutorConfigurator.scala:48)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)

Can you show your participants.json (without the tokens)? It looks like the url might be off.

It’s like this:

{
  "default_participant": {
    "host": "https://api.projectdabl.com",
    "port": 443,
    "access_token": "xxx"
  },
  "participants": {
    "gyorgy_rtledgers_com": {
      "host": "https://api.projectdabl.com",
      "port": 443,
      "access_token": "xxx"
    }, etc.

gyorgybalazsi:

"host": "https://api.projectdabl.com",
    "port": 443,

This is not working either:

https://api.projectdabl.com:443/v1/create

Try replacing https://api.projectdabl.com with https://yourledgeridhere.daml.app. You can find the ledger id in your ledger settings in the hub console.

cocreature:

https://yourledgeridhere.daml.app .

This works:

"default_participant": {
    "host": "https://cxs7h3enaoiaaehw.daml.app",
    "port": 443,
    "access_token": "xxx"
  },
  "participants": {
    "gyorgy_rtledgers_com": {
      "host": "https://cxs7h3enaoiaaehw.daml.app",
      "port": 443,
      "access_token": "xxx"
    }, etc.

Why isn’t this in the exported json?

Definitely a bug, we’ll make sure to fix it.

Thanks!