HDR movie conversion problem

right now SVP (in fact, mpv) can only do tone mapping when transcoding HDR video

How does the distinguished team set up SVP (Can you tell me a little bit more steps? And screenshots) HDR video is transcoded by SVP for tone mapping? Request method.

I have tried to switch to the "advanced" mode, put something like "zscale = transfer = linear, tonemap = reinhard, zscale = transfer = bt709, format = yuv420p" into the lavfi field, set the depth = 8 bits,
But every time the effect appears, it is displayed incorrectly and cannot be converted at all. I would be very grateful for answers.
The following is the error log content.

16:29:51.811: ===== Starting mpv ======
16:29:51.811: Command line: C:\Program Files (x86)\SVP 4\mpv64\mpv.exe C:/Users/Administrator.USER-20190822KX/Desktop/c0f9226346e7f279694ba03718c2ad0c.mp4 --o=C:/Users/Administrator.USER-20190822KX/Desktop/c0f9226346e7f279694ba03718c2ad0c.SVP.temporary.mkv --no-audio --no-sub --no-sub-auto --input-ipc-server=mpvencodepipe --input-media-keys=no --no-msg-color --vf=lavfi=[zscale = transfer = linear，tonemap = reinhard，zscale = transfer = bt709，format = yuv420p],vapoursynth:[C:\Users\Administrator.USER-20190822KX\AppData\Roaming\SVP4\scripts\ffff.py]:4:2 --of=matroska --ovc=libx265 --ovcopts=crf=18,preset=slow,threads=2
16:29:51.898: Warning: option --o is deprecated and might be removed in the future (lack of maintainer).
16:29:51.920: (+) Video --vid=1 (*) (h264 960x544 30.000fps)
16:29:51.920: Audio --aid=1 (*) (aac 1ch 44100Hz)
16:29:51.926: [ffmpeg] Eval: Invalid chars '，tonemap=reinhard，zscale=transfer=bt709，format=yuv420p' at the end of expression 'linear，tonemap = reinhard，zscale = transfer = bt709，format = yuv420p'
16:29:51.927: [ffmpeg] zscale: Unable to parse option value "linear，tonemap = reinhard，zscale = transfer = bt709，format = yuv420p"
16:29:51.927: [ffmpeg] Eval: Invalid chars '，tonemap=reinhard，zscale=transfer=bt709，format=yuv420p' at the end of expression 'linear，tonemap = reinhard，zscale = transfer = bt709，format = yuv420p'
16:29:51.927: [ffmpeg] zscale: Unable to parse option value "linear，tonemap = reinhard，zscale = transfer = bt709，format = yuv420p"
16:29:51.927: [ffmpeg] zscale: Error setting option transfer to value linear，tonemap = reinhard，zscale = transfer = bt709，format = yuv420p.
16:29:51.927: [ffmpeg] Parsed_zscale_0: Error applying options to the filter.
16:29:51.927: [ffmpeg] AVFilterGraph: Error initializing filter 'zscale' with args 'transfer = linear，tonemap = reinhard，zscale = transfer = bt709，format = yuv420p'
16:29:51.927: [lavfi] parsing the filter graph failed
16:29:51.927: [user_filter_wrapper] Creating filter 'lavfi' failed.
16:29:51.928: [vo/lavc] error encoding at EOF
16:29:51.928: Video: no video
16:29:51.928: No video or audio streams selected.
16:29:51.928: [encode] no data written to target file
16:29:51.928: Exiting... (Interrupted by error)
16:29:51.986: (!!!) Intermediate file may be broken: C:\Users\Administrator.USER-20190822KX\Desktop\c0f9226346e7f279694ba03718c2ad0c.SVP.temporary.mkv
16:29:51.986: ===== mpv exited with code 2 =====

Dear senior developer, how do you delete space? Where to delete? I also do not understand.

Ok very grateful
What should I do about video watermarking? How to add video watermark，I tried this code but it doesn’t work movie=d\\:/logo-48.png[watermark],[in][watermark]overlay=10:main_h-overlay_h-10[out]

12:03:39.524: ===== Starting mpv ======
12:03:39.524: Command line: C:\Program Files (x86)\SVP 4\mpv64\mpv.exe C:/Users/Administrator.USER-20190822KX/Desktop/c0f9226346e7f279694ba03718c2ad0c.mp4 --o=C:/Users/Administrator.USER-20190822KX/Desktop/c0f9226346e7f279694ba03718c2ad0c.SVP.temporary.mkv --no-audio --no-sub --no-sub-auto --input-ipc-server=mpvencodepipe --input-media-keys=no --no-msg-color --vf=lavfi=[movie=d\\:/logo-48.png[watermark]，[in][watermark]overlay=10:main_h-overlay_h-10[out]],vapoursynth:[C:\Users\Administrator.USER-20190822KX\AppData\Roaming\SVP4\scripts\ffff.py]:4:2,fps=45.000 --of=matroska --ovc=h264_qsv --ovcopts=preset=veryslow,profile=high,look_ahead=1,global_quality=18,time_base=1000/45000,threads=2
12:03:39.633: Warning: option --o is deprecated and might be removed in the future (lack of maintainer).
12:03:39.668: (+) Video --vid=1 (*) (h264 960x544 30.000fps)
12:03:39.669: Audio --aid=1 (*) (aac 1ch 44100Hz)
12:03:39.684: [ffmpeg] Parsed_movie_0: Failed to avformat_open_input 'd:/logo-48.png'
12:03:39.684: [ffmpeg] AVFilterGraph: Error initializing filter 'movie' with args 'd\:/logo-48.png'
12:03:39.684: [lavfi] parsing the filter graph failed
12:03:39.684: [user_filter_wrapper] Creating filter 'lavfi' failed.
12:03:39.685: [vo/lavc] error encoding at EOF
12:03:39.685: Video: no video
12:03:39.685: No video or audio streams selected.
12:03:39.685: [encode] no data written to target file
12:03:39.686: Exiting... (Interrupted by error)
12:03:39.745: (!!!) Intermediate file may be broken: C:\Users\Administrator.USER-20190822KX\Desktop\c0f9226346e7f279694ba03718c2ad0c.SVP.temporary.mkv
12:03:39.745: ===== mpv exited with code 2 =====

Senior developer, I don't quite understand what you mean? Does it mean that my D drive does not have LOGO watermark text? Can you give me an example? Be more detailed, thank you infinitely