ffplay can play it but with error messages:
ffplay https://stream.nightride.fm:8443/chillsynth/aac_hifi.m3u8
[https @ 000000b24ec2a5c0] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi_1671753490.m4s' for reading
[hls @ 000000b24b411b80] Skip ('#EXT-X-VERSION:7')KB sq= 0B f=0/0
[hls @ 000000b24b411b80] Skip ('#EXT-X-DISCONTINUITY-SEQUENCE:0')
[https @ 000000b24f1ebe00] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi_0.m4s' for reading
[hls @ 000000b24b411b80] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi_1671753495.m4s' for reading
[mov,mp4,m4a,3gp,3g2,mj2 @ 000000b24e906300] Found duplicated MOOV Atom. Skipped it
[https @ 000000b24ec2a5c0] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi_1671753500.m4s' for reading
[hls @ 000000b24b411b80] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi_1671753500.m4s' for reading
[https @ 000000b24f98a600] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi.m3u8' for reading
[hls @ 000000b24b411b80] Skip ('#EXT-X-VERSION:7')
[hls @ 000000b24b411b80] Skip ('#EXT-X-DISCONTINUITY-SEQUENCE:0')
[https @ 000000b24fc00040] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi_0.m4s' for reading
[hls @ 000000b24b411b80] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi_1671753505.m4s' for reading
[mov,mp4,m4a,3gp,3g2,mj2 @ 000000b24e906300] Found duplicated MOOV Atom. Skipped it
[https @ 000000b24f98a600] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi.m3u8' for reading
[hls @ 000000b24b411b80] Skip ('#EXT-X-VERSION:7')KB sq= 0B f=0/0
[hls @ 000000b24b411b80] Skip ('#EXT-X-DISCONTINUITY-SEQUENCE:0')
[https @ 000000b24ec1d500] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi_0.m4s' for reading
[hls @ 000000b24b411b80] Opening 'https://stream.nightride.fm:8443/chillsynth/aac_hifi_1671753510.m4s' for reading
[mov,mp4,m4a,3gp,3g2,mj2 @ 000000b24e906300] Found duplicated MOOV Atom. Skipped it
By the way, this stream has one of the worst compression pumping effect I've ever heard.