CreateProcess error=87, The parameter is incorrect

I had this error in a JenkinsFile build during git checkout. It turned out that the Jenkins node config contained an empty environment variable

Removing this empty variable solved the problem. Looks similar to what @bitoiu answered.

In my case, a stack trace showed up with a message cannot run program "". I figured this was due to a space character in my Jenkins shell step's shebang.

#! bash
...

The cause line reads,

Caused: java.io.IOException: Cannot run program "" (in directory "e:\jenkins_agent\workspace\FOLDER\JOB"): CreateProcess error=87, The parameter is incorrect

This was fixed by removing the space in the shebang line,

#!bash
...

setting Path in the system environment of the Jenkins agent and restarting the agent.

How to set the PATH environment variable in Jenkins configuration on Windows?