ffmpeg.exe exited with exit code 1 JPG to WEBM

[Practice2ST]

Arguments: -i "C:\Users\nazwa_użytkownika\Desktop\sraka.jfif" -an -c:v libvpx -crf 32 -b:v 16000K -threads 1 -metadata title="sraka" -quality best -lag-in-frames 16 -f webm -y "C:\Users\nazwa_użytkownika\Desktop\sraka.webm"
ffmpeg version N-62162-gec8789a Copyright (c) 2000-2014 the FFmpeg developers
built on Apr 4 2014 22:01:36 with gcc 4.8.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 74.100 / 52. 74.100
libavcodec 55. 57.100 / 55. 57.100
libavformat 55. 36.101 / 55. 36.101
libavdevice 55. 11.100 / 55. 11.100
libavfilter 4. 3.100 / 4. 3.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
C:\Users\nazwa_uĹĽytkownika\Desktop\sraka.jfif: Invalid data found when processing input
--- FFMPEG HAS EXITED ---

ffmpeg.exe exited with exit code 1. That's usually bad.
If you have no idea what went wrong, open an issue on GitHub and copy paste the output of this window there.