GStreamer-imx6 error

[Gofrane]

hello,

 
when I have used this pepiline

*gst-launch-1.0 videotestsrc ! imxipuvideosink*

I have gotten this error
*Setting pipeline to PAUSED ...                                             	
ERROR: Pipeline doesn't want to pause.                                     	

ERROR: from element
/GstPipeline:pipeline0/GstImxIpuVideoSink:imxipuvideosink0:
could not open /dev/fb0: No such file or directory                         	
Additional debug info:                                                     	

../src/blitter/video_sink.c(925):
gst_imx_blitter_video_sink_open_framebuffer_de
vice (): /GstPipeline:pipeline0/GstImxIpuVideoSink:imxipuvideosink0        	
Setting pipeline to NULL ...                                               	
Freeing pipeline ...  *



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