Cannot stream from obs to rtmp; Error opening input: I/O error

[Joly0]

Describe the bug
I have enabled the rtmp server in restreamer and copied the shown address into obs in the custom stream server field. I tried leaving the stream key empty or tried to add the password, but neither worked. I enabled the stream source after starting to stream from obs, but the check errors out with the error code "Error opening input: I/O error

ffmpeg version 6.1.1-datarhei Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 13.2.1 (Alpine 13.2.1_git20231014) 20231014
  configuration: --extra-version=datarhei --prefix=/usr --extra-libs='-lpthread -lxml2 -lm -lsupc++ -lstdc++ -lssl -lcrypto -lz -lc -ldl' --enable-nonfree --enable-gpl --enable-version3 --enable-postproc --enable-static --enable-openssl --enable-libxml2 --enable-libv4l2 --enable-v4l2_m2m --enable-libfreetype --enable-alsa --enable-libsrt --enable-libx264 --enable-libx265 --enable-libvpx --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libdav1d --enable-librav1e --disable-ffplay --disable-debug --disable-doc --disable-shared
  libavutil      58. 29.100 / 58. 29.100
  libavcodec     60. 31.102 / 60. 31.102
  libavformat    60. 16.100 / 60. 16.100
  libavdevice    60.  3.100 / 60.  3.100
  libavfilter     9. 12.100 /  9. 12.100
  libswscale      7.  5.100 /  7.  5.100
  libswresample   4. 12.100 /  4. 12.100
  libpostproc    57.  3.100 / 57.  3.100
[in#0 @ 0x14821cc70e40] Error opening input: I/O error
Error opening input file rtmp://localhost:1935/bbade45b-9d97-422a-803c-509dcb721089.stream?token=TestToken.
Error opening input files: I/O error

Expected behavior
Should work

[ioppermann]

What is the RTMP URL you entered in OBS? There is a bug in the UI that presents a wrong RTMP URL for the custom stream server field.