FFMPEG invalid time for chapter

[parataxus]

When creating chapters aborted without error I removed -loglevel quiet from line 868 to get this.
Windows 10, git bash, fixed lines 211-213 to also use linux commands.

=End============================================================================
2021-12-30 12:06:56+0100 Total length: 10:58:42
2021-12-30 12:06:56+0100 Extracting 139 chapter files from ./Hörbuch/J. R. R. Tolkien/Der Hobbit/Der Hobbit.mp3...
2021-12-30 12:06:56+0100 Continuing at chapter 1:
2021-12-30 12:06:56+0100 DEBUG Chapter Variables:
=Start==========================================================================
cover_file        = ./Hörbuch/J. R. R. Tolkien/Der Hobbit/cover.jpg
chapter_start     = 0.000000,
chapter_end       = 16.230748
chapternum        = 1
chapter           = Chapter 1
chapterNameScheme = $(printf %0${#chaptercount}d $chapternum) $chapter
chapter_title     = 001 Chapter 1
chapter_file      = ./Hörbuch/J. R. R. Tolkien/Der Hobbit/001 Chapter 1.mp3
=End============================================================================
(s)1-12-30 12:06:57+0100 Splitting chapter 1/139 start:0.000000(s) end:16.230748
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  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
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Invalid duration specification for to: 16.230748