title: GStreamer-CRITICAL **: gst_debug_log_valist: assertion `category != NULL' failed?
body: <p>How might I chase down the root cause of this error message?</p>
  
  <blockquote>
    <p>(test:1090): GStreamer-CRITICAL **: gst_debug_log_valist: assertion
    `category != NULL' failed</p>
  </blockquote>
  
  <p>I am using <code>--gst-debug=GST_REFCOUNTING:5</code> to debug intermittent issues in the code that can take more than 10 hours to reproduce. The pipeline seems to work fine even with the gst-debug error message. Should I be concerned about the GStreamer-CRITICAL error message? </p>