java.lang.Thread$State java.lang.Thread.getState()' on a null object reference

[tan1X]

The implementation used to work fine, but then I upgraded gradle to 4.1.1 and i kept getting this error

Maybe this could help over CameraSource.java

    @SuppressLint("Assert")
    void release() {
        assert (mProcessingThread == null || mProcessingThread.getState() == State.TERMINATED);
        if (mDetector != null) {
            mDetector.release();
            mDetector = null;
        }
    }