How to solve the error when using gstremaer to read h264 file and send it via avtp plugin?

General Discussion
1

run cmd：./gst-launch-1.0 filesrc location=sample_outdoor_car_1080p_10fps.h264 do-timestamp=true ! h264parse ! avtpcvfpay ! avtpsink ifname=lo

error：
Setting pipeline to PAUSED …
Pipeline is PREROLLING …
**
ERROR:…/subprojects/gst-plugins-bad/ext/avtp/gstavtpbasepayload.c:234:gst_avtp_base_payload_calc_ptime: assertion failed: (GST_BUFFER_PTS (buffer) != GST_CLOCK_TIME_NONE)
Bail out! ERROR:…/subprojects/gst-plugins-bad/ext/avtp/gstavtpbasepayload.c:234:gst_avtp_base_payload_calc_ptime: assertion failed: (GST_BUFFER_PTS (buffer) != GST_CLOCK_TIME_NONE)
Aborted (core dumped)