polastre opened a new issue, #962:
URL: https://github.com/apache/incubator-baremaps/issues/962
## Description
This error is thrown at the end of my workflow, but I can't figure out why.
I will try to create a simplified workflow.js to reproduce, but wanted to start
by asking if anyone has ideas.
## Environment
- **OS:** Linux
- **Java:** JDK 21
## Steps to Reproduce
Run `baremaps workflow execute --file=workflow.js`
## Error
```
[ERROR] 2025-09-23 00:23:49.602 [main] WorkflowExecutor - Error while
executing the workflow
java.util.concurrent.CompletionException:
org.apache.baremaps.workflow.WorkflowException: java.net.MalformedURLException:
Cannot invoke "String.length()" because "spec" is null
at
java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
~[?:?]
at
java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
~[?:?]
at
java.base/java.util.concurrent.CompletableFuture$UniRun.tryFire(CompletableFuture.java:791)
~[?:?]
at
java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
~[?:?]
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
~[?:?]
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
~[?:?]
at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: org.apache.baremaps.workflow.WorkflowException:
java.net.MalformedURLException: Cannot invoke "String.length()" because "spec"
is null
at
org.apache.baremaps.workflow.WorkflowExecutor.lambda$createStep$3(WorkflowExecutor.java:172)
~[baremaps-core-0.8.2.jar:0.8.2]
at
java.base/java.util.concurrent.CompletableFuture$UniRun.tryFire(CompletableFuture.java:787)
~[?:?]
... 4 more
Caused by: java.net.MalformedURLException: Cannot invoke "String.length()"
because "spec" is null
at java.base/java.net.URL.<init>(URL.java:806) ~[?:?]
at java.base/java.net.URL.<init>(URL.java:654) ~[?:?]
at java.base/java.net.URL.<init>(URL.java:590) ~[?:?]
at
org.apache.baremaps.tasks.DownloadUrl.execute(DownloadUrl.java:74)
~[baremaps-core-0.8.2.jar:0.8.2]
at
org.apache.baremaps.workflow.WorkflowExecutor.lambda$createStep$3(WorkflowExecutor.java:167)
~[baremaps-core-0.8.2.jar:0.8.2]
at
java.base/java.util.concurrent.CompletableFuture$UniRun.tryFire(CompletableFuture.java:787)
~[?:?]
... 4 more
Caused by: java.lang.NullPointerException: Cannot invoke "String.length()"
because "spec" is null
at java.base/java.net.URL.<init>(URL.java:712) ~[?:?]
at java.base/java.net.URL.<init>(URL.java:654) ~[?:?]
at java.base/java.net.URL.<init>(URL.java:590) ~[?:?]
at
org.apache.baremaps.tasks.DownloadUrl.execute(DownloadUrl.java:74)
~[baremaps-core-0.8.2.jar:0.8.2]
at
org.apache.baremaps.workflow.WorkflowExecutor.lambda$createStep$3(WorkflowExecutor.java:167)
~[baremaps-core-0.8.2.jar:0.8.2]
at
java.base/java.util.concurrent.CompletableFuture$UniRun.tryFire(CompletableFuture.java:787)
~[?:?]
... 4 more
```
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