---
title: "Sentry CLI Execution Failure when using Sentry Maven plugin"
description: "Troubleshoot and resolve Sentry CLI execution failures when using the Sentry Maven plugin."
url: https://docs.sentry.io/platforms/java/guides/jul/troubleshooting/sentry-cli-execution-failure/
---

# Sentry CLI Execution Failure when using Sentry Maven plugin | Sentry for java.util.logging

The Sentry Maven plugin may fail to execute Sentry CLI in certain environments.

## [Symptoms](https://docs.sentry.io/platforms/java/guides/jul/troubleshooting/sentry-cli-execution-failure.md#symptoms)

* A build using `sentry-maven-plugin` fails during execution of `sentry-cli` (e.g. to collect and upload a source bundle).
* Enabling debug logs for `sentry-cli` doesn't show meaningful errors from `sentry-cli` itself.

To enable debug logs, set

```xml
<debug>false</debug>
<debugSentryCli>true</debugSentryCli>
```

in your `<configuration>` for `sentry-maven-plugin`.

You might see similar lines in the logs:

```bash
[ERROR] Error while attempting to run Sentry CLI:
org.apache.maven.plugin.MojoExecutionException: An Ant BuildException has occurred: Execute failed: java.io.IOException: Cannot run program "/bin/sh" [...]
```

## [Solution](https://docs.sentry.io/platforms/java/guides/jul/troubleshooting/sentry-cli-execution-failure.md#solution)

Add the following JVM option to switch the process launch mechanism to `vfork`:

```bash
-Djdk.lang.Process.launchMechanism=vfork
```

## [Related Issue](https://docs.sentry.io/platforms/java/guides/jul/troubleshooting/sentry-cli-execution-failure.md#related-issue)

For more details about this issue and the investigation process, see [GitHub Issue #169](https://github.com/getsentry/sentry-maven-plugin/issues/169).

If this doesn't solve the problem, please [open a new issue on GitHub](https://github.com/getsentry/sentry-maven-plugin/issues/new/choose).