C:\>aws-tts test.txt test.mp3
√ Reading text
√ Splitting text
√ Convert to audio (1/1)
× Combine audio
Error: ffmpeg returned an error (1)
at ChildProcess.ffmpeg.on.code (C:\Users\Eric\AppData\Roaming\npm\node_modules\aws-tts\lib.js:160:25)
at emitTwo (events.js:106:13)
at ChildProcess.emit (events.js:191:7)
at maybeClose (internal/child_process.js:877:16)
at Socket.<anonymous> (internal/child_process.js:334:11)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at Pipe._handle.close [as _onclose] (net.js:498:12)
Trying to run the ffmpeg CLI throws an error: