Render Fails Repeatedly - Fusion 9

So I have the free version of Fusion 9 - really want to get better at it, and learn, to get rid of Adobe, BUT - right now Fusion 9 keeps failing to render a pretty simple timeline.
All I have is a mask and a luma key on some video. About 6000 frames.
I've tried different formats, and it fails each time, at a random time. Here is an example of what the log says. Anyone have any ideas?

Render started at Thu 3:48PM (Range: 0.0 to 5843.0)
Loader1 failed to load file "C:\Users\jboll\Videos\Captures\Lib_Sooner_Bot.mp4" (clip "C:\Users\jboll\Videos\Captures\Lib_Sooner_Bot.mp4" at frame 973)
LumaKeyer1 cannot get Parameter for Input at time 973
Saver1 cannot get Parameter for Input at time 973
Saver1 failed at time 973
ERROR: Render failed at Thu 3:50PM! Last frame rendered: 974.0!



Here is a log from a time it almost made it to the end:
Render started at Thu 3:09PM (Range: 0.0 to 5843.0)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 471)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 676)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 758)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 1051)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 1286)
LumaKeyer1 cannot get Parameter for Input at time 1286
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 1526)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 1610)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 1691)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 1745)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 1776)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 1884)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 2044)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 2104)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 2499)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 2613)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 2652)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 2745)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 2866)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 3101)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 3224)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 3369)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 3480)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 3595)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 3791)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 3854)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 3937)
LumaKeyer1 cannot get Parameter for Input at time 3937
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 3968)
LumaKeyer1 cannot get Parameter for Input at time 3968
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 4009)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 4149)
LumaKeyer1 cannot get Parameter for Input at time 4149
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 4327)
LumaKeyer1 cannot get Parameter for Input at time 4327
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 4544)
LumaKeyer1 cannot get Parameter for Input at time 4544
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 4727)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 4806)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 4977)
LumaKeyer1 cannot get Parameter for Input at time 4977
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 5029)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 5062)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 5230)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 5430)
LumaKeyer1 cannot get Parameter for Input at time 5430
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 5523)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 5700)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 5761)
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 5782)
LumaKeyer1 cannot get Parameter for Input at time 5782
Loader1 failed to load file "F:\OU Shoot\2019-03-07 14-20-19.mp4" (clip "F:\OU Shoot\2019-03-07 14-20-19.mp4" at frame 5782)
LumaKeyer1 cannot get Parameter for Input at time 5782
Saver1 cannot get Parameter for Input at time 5782
Saver1 failed at time 5782
ERROR: Render failed at Thu 3:35PM! Last frame rendered: 5783.0!

What is your OS, hardware specs?

I have a similar issue, I also try to render some video and all I get is a window that notifies me with the following text:

-WARNING! Render did not complete!-

I'm using Fusion 9 in free version, on a Windows 10 OS.
I really, really need to render this videos.
Please, can somebody help me?

Sorry - Win 10.
Dell 9570
Nvideo GeForce GTX 1050 Ti with Max-Q Design
Driver version (Creator Version) 419.67
Intel(R) Core (TM) i7-8750H
16GB Ram

OK - early stages - but this seems to have solved the problem.
Gone to preferences>Global>OpenCL and changed Device from Auto to GPU

Just successfully rendered both an AVI and Quicktime. But again early stages of testing.

BTW -
Win 10
Dell 9570
GeForce GTX 050 Ti with Max-Q Design
Creator Driver 419.67
Core i7-8750H
16GB Ram

Well that was short lived. Failing again. Seems like for some reason Fusion can't load the footage used in the comp? This is the kind of error I'm getting in the console again.

Render started at Tue 3:06PM (Range: 0.0 to 900.0)
Loader1 failed to load file "C:\Users\jboll\Videos\Captures\Speed Dial - Opera 1_2_2019 11_43_52 AM.mp4" (clip "C:\Users\jboll\Videos\Captures\Speed Dial - Opera 1_2_2019 11_43_52 AM.mp4" at frame 102)
Saver1 cannot get Parameter for Input at time 102
Saver1 failed at time 102
ERROR: Render failed at Tue 3:06PM! Last frame rendered: 103.0!

Have you tried converting your mp4 to frames? mp4 is a notoreously bad container for anything VFX related. Depending on the internal codec it uses, the frames need to be reconstructed on the fly from various points in time. This has caused Fusion to stumble in the past. It's definitely worth checking out.

Thanks Sander -
Was just coming on to post this update. I belive it is the 10bit codec from my Panasonic Gh5.
Many things don't like it. So it's a pain, but that flavor of Panasonic video is a no go in Fusion 9. Not sure about the new Fusion 16 Studio.
You can take the 10Bit Codec into Resolve Studio 15 (which I have) and work with it in Fusion within Resolve....so that is your workaround. I just still come from the old school where I might want a compositing program that is standalone, like AE.
Took that 10bit stuff and converted it to other flavors of video - and Fusion 9 worked with it, and rendered it fine. Just another long lesson in how new cameras exotic codecs are still a wild pain in the ass in editors.
Thanks for all the suggestions folks.

J