Pre-launch report new issue / exception "Last action is expected to be launch > action."

Recently, I've started to receive a new error on the Pre-Launch report on some devices:

java.lang.IllegalStateException: Last action is expected to be launch action.

The related Logcat info is this bit:

FATAL EXCEPTION: Thread-2 Process: androidx.test.tools.crawler:robov2crawldriver, PID: 15731 java.lang.IllegalStateException: Last action is expected to be launch action. at androidx.test.tools.crawler.obfuscated.z.p.b(PatternCompiler.java:31) at androidx.test.tools.crawler.controller.CoreController.crawl(CoreController.java:84) at androidx.test.tools.crawler.controller.CoreController.run(CoreController.java:33)

The most curious thing is that I haven't been able to find any results in different search engines by searching for "Last action is expected to be launch action.". So it might be a bug on the Firebase Robo Test.

If I check the videos or the execution, there isn't anything that tells me that there was actually a real error.

Has anyone found these errors? Did you manage to get rid of them?