HLS manifest problem

We packed hevc video with HLS.

when trying to play it using an ipad with ios version 12.1, the player doesn't request any segments, only the playlists are requested.

Can someone help up figure out what's the problem with those playlists ?

the main: main.m3u8

#EXTM3U

#EXT-X-VERSION:7

#EXT-X-INDEPENDENT-SEGMENTS

#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=2898000,RESOLUTION=960x540,CODECS="hvc1.2.4.L123.B0,ec-3",FRAME-RATE=60.000,AVERAGE-BANDWIDTH=1996813

01.m3u8

01.m3u8:

#EXTM3U

#EXT-X-VERSION:7

#EXT-X-INDEPENDENT-SEGMENTS

#EXT-X-TARGETDURATION:8

#EXT-X-MEDIA-SEQUENCE:1

#EXT-X-PLAYLIST-TYPE:VOD

#EXT-X-MAP:URI="1_init.mp4"

#EXTINF:7.88333,1:PTS=127499

#EXT-X-MAP:URI="1_init.mp4"

20181217T135737-01-1vod.mp4

#EXTINF:7.88333,2:PTS=837000

#EXT-X-MAP:URI="1_init.mp4"

20181217T135737-01-2vod.mp4

#EXTINF:7.88333,3:PTS=1546499

#EXT-X-MAP:URI="1_init.mp4"

20181217T135737-01-3vod.mp4

#EXTINF:7.88333,4:PTS=2255999

.

.

.

20181217T135737-01-74vod.mp4

#EXTINF:7.88333,75:PTS=52616999

#EXT-X-MAP:URI="1_init.mp4"

20181217T135737-01-75vod.mp4

#EXTINF:6.9,76:PTS=53326499

#EXT-X-MAP:URI="1_init.mp4"

20181217T135737-01-76vod.mp4

#EXT-X-ENDLIST