# Pastebin 8FqAnpnW
Twisted traceback:
Traceback (most recent call last):
Failure: flumotion.common.errors.GStreamerGstError: (<__main__.GstDvswitchSrc object at 0x7f10c8c5f410 (GstDvswitchSrc at 0x18a7be0)>, GError('Internal data flow error.',), 'gstbasesrc.c(2865): gst_base_src_loop (): /GstPipeline:pipeline-producer-audio-video/GstDvswitchSrc:src:\nstreaming task paused, reason not-negotiated (-4)')

DEBUG [19679]                                  twisted           Aug 04 16:52:36       [-] Traceback (most recent call last):
	Failure: flumotion.common.errors.GStreamerGstError: (<__main__.GstDvswitchSrc object at 0x7f10c8c5f410 (GstDvswitchSrc at 0x18a7be0)>, GError('Internal data flow error.',), 'gstbasesrc.c(2865): gst_base_src_loop (): /GstPipeline:pipeline-producer-audio-video/GstDvswitchSrc:src:\nstreaming task paused, reason not-negotiated (-4)')