Provisional Headers are shown warning while playing master.m3u8

[imdsp]

I have installed the shakha packager in ubuntu 20.04 and trying to package udp live input to HLS with below command

packager 'in=udp://239.255.1.1:1234?interface=10.160.0.5,stream=video,init_segment=h264_1080p_init.mp4,segment_template=h264_1080p_$Number$.m4s,playlist_name=h264_1080p.m3u8' 'in=udp://239.255.1.1:1234?interface=10.160.0.5,stream=audio,init_segment=audio_init.mp4,segment_template=audio_$Number$.m4s,playlist_name=audio.m3u8' --hls_master_playlist_output /home/ubuntu/output/1/h264_master.m3u8 --minloglevel 0 --hls_playlist_type LIVE --hls_base_url http://localhost/hls/ --segment_duration 4 --time_shift_buffer_depth 120

After running this command in /var/www/html/Shakha/
the master and chunk are getting generated

But while trying to play this same over web browser it gives 200 ok for master.m3u8
and Provisional Headers are shown warning for audio.m3u8 and h264_1080p.m3u8

i have tried to changed the nginx web server config to no cache config.
can you please address my mistakes.