Thanks everyone for your responses!
Yes, I am using RPG Maker MV, sorry for not clarifying before.
My friend has no issue playing the game after I deployed it, actually.
@Shaz Sigh, I did... I made a folder within the project folder then put it in there. The first time it appeared to do nothing. I'm assuming I did the wrong thing there....
@megumi014 - Was there an update just recently? I don't want to revert if I don't have to, hope you understand.
@Andar Well, I am unsure how to do 1! But I am willing to learn. I checked out number 2 following your instruction. I don't see any text with a % and numbers, so I suppose that's a good sign!
How would I call for a system file in another area? I have a debug room that can serve this purpose, but I am unsure how to call for the picture in question. The file is "Weapons4.png" which is a file I inserted myself to add more weapons to the game. It would be found under images in the category of system. The game is working fine after I deployed it, this issue only appeared after I deployed. The deployed game works fine, but now I can't play test the game as I am getting this error.
Update:
Okay, so I deployed my game again and I didn't select anything this time. The deployed game works fine! However, I still can't playtest as I am still getting the error. The issue is isolated in the RPG Maker MV program.
Update 2:
Okay, so I found something. There is this new folder labeled "www" - I don't remember it being there before, so I removed it. Now it gives me an error - "Your file was not found." - Okay. So obviously now my game is calling on this folder in order to initiate, and it lacks the Weapons4.png file.
Update 3:
Here is a picture of the error I am getting....
Update 4:
Okay, I tried something. I took all the main files for RPG Maker MV, and copied them over to another project. When I did this, I received the following error message:
Turning off the related plugin fixes the issue.
Okay so, because I got the package deal with the Octopath Battler pack, I didn't really get to familiarize myself with the plugins as they were put in the game. So what is this sucker supposed to be doing?
I'm play testing now to see if it will cause an error.
Update 5:
No idea why I didn't just google it. I have no intention of using DragonBone animated sprites, so this is an easy decision to leave off.
Well, it looks like I solved it... for now... I am still playtesting. Thank you everyone for your help!!