Can't export project in Rush

[#1]

I tried rendering my project on my S9+ and it renders all the way and then it says Error saving file to disk! And I've used up 2 of my free exports being victim to this error please help! How to fix this?

[#2]

I tried rendering my project on my S9+ and it renders all the way and then it says Error saving file to disk! And I've used up 2 of my free exports being victim to this error please help! How to fix this?

[#3]

How long is your movie and how much free space is on your device's drive?