parser error

[RS]

Does anyone have any idea what causes a parser error?  I thought at first 
that it was an AtomicParsley error, but the --verbose output seems to 
indicate it didn't get that far.  The programme is the editorial version of 
the 1941 Hitchcock film Suspicion, b00gmlrx, from hlshd1 (CDN: 
akamai_hls_open/10).  --no-hq-audio was set.  There probably were no 
subtitles, but get_iplayer (this is v3.05 in Windows 10) normally just says 
so.  The resultant .mp4 file can be played in VLC, but MediaInfo shows no 
metadata.  The ^ in the error message is placed just after the N in the line 
above.

INFO: Downloaded: 1689.27 MiB (01:35:20) [573] in 00:03:03 at 73.85 Mibit/s
INFO: Converting to MP4
INFO: Command: "ffmpeg" "-loglevel" "fatal" "-stats" "-y" "-i" 
"H:\Dvid17A\Suspicion.hls.ts" "-c:v" "copy" "-c:a" "copy" "-bsf:a" 
"aac_adtstoasc" "H:\Dvid17A\Suspicion.partial.mp4"
frame=143024 fps=1417 q=-1.0 Lsize= 1669279kB time=01:35:20.93 
bitrate=2390.3kbits/s speed=56.7x
INFO: Command exit code 0 (raw code = 0)
INFO: Downloading subtitles
INFO: Getting URL: 
http://www.bbc.co.uk/iplayer/subtitles/ng/modav/bUnknown-591e0c64-779b-4f16-9582-bd3bc6c441bd_b09c79wx_1508034118207.xml
:7: parser error : Char 0x0 out of allowed range
        SUSPICION
                 ^
:7: parser error : Premature end of data in tag title line 6
        SUSPICION
                 ^
:7: parser error : Premature end of data in tag metadata line 5
        SUSPICION
                 ^
:7: parser error : Premature end of data in tag head line 3
        SUSPICION
                 ^
:7: parser error : Premature end of data in tag tt line 2
        SUSPICION
                 ^