Failed to rename file - while streaming via browser

Noticed while streaming a show (it works fine BTW) via browser that I get something similar to this:

“failed to rename file /mnt/data1/00-home/99-DVR/Streaming/ANY-ch26.1/stream74.ts.tmp to /mnt/data1/00-home/99-DVR/Streaming/ANY-ch26.1/stream74.ts”

Running on Ubuntu 17.10

Here is my log:

2017/10/10 10:52:03 [TNR] Opened connection to 104D8112 for ch26.1
2017/10/10 10:52:03 [HLS] Starting transcoder for channel 26.1 (encoder=h264_vaapi, resolution=, deinterlacer=blend, bitrate=10000)
libva info: VA-API version 0.40.0
libva info: va_getDriverName() returns 0
libva info: va_openDriver() returns 0
2017/10/10 10:53:18 [HLS] Stopping transcoder session ANY-ch26.1 @ 1m14.140733s
2017/10/10 10:53:18 [TNR] Closed connection to 104D8112 for ch26.1
[mpegts @ 0x2d9d960] Dropped corrupted packet (stream = 1)
[mpeg2video @ 0x2dadba0] ac-tex damaged at 35 29
[mpeg2video @ 0x2dadba0] Warning MVs not available
[hls @ 0x3356740] failed to rename file /mnt/data1/00-home/99-DVR/Streaming/ANY-ch26.1/stream74.ts.tmp to /mnt/data1/00-home/99-DVR/Streaming/ANY-ch26.1/stream74.ts
av_interleaved_write_frame(): No such file or directory