Latest version of BAS
https://bablosoft.com/distr/BrowserAutomationStudio/28.8.1/BrowserAutomationStudioInstallAllInOne.exe
In the fingerprint settings (if used), select Browser Version: current
@nydigov Easiest way to fix this is to delete "Close Browser" action. If you don't have any open/close browser actions BAS will handle browser lifetime automatically.
If you want to handle it by yourself, add Open browser action before using any action which needs browser.