Transcoding issues - ffmpeg exited with code 1

Transcoding settings: No Hardware Acceleration - Just CPU CRF = 23 Preset = Slow Audio codec = aac Video = h264 Max bitrate = 4500k Tone mapping = Habble Two-pass encoding: Enabled/Disabled (problem described below) No issues when two-pass encoding is disabled. Whenever I turn on two-pass encoding, I get the 'Error: ffmpg exited with code 1 issue'. With my minimal understanding of the log, looks like the transcoding works fine, but the thumbnail generation after the transcoding fails? Not sure. Is it something with my configuration? Should I not be enabling two-pass encoding with the rest of the settings I have above? Note: I did raise an issue on GitHub, but I thought Discord could be the preferred medium for questions and issues.