How can i fix my game? (expParams in RPG Maker MV)

[Sansarasansa]

I really need help for how i would fix this.

I just tell from beginning what i did until i notice game doesn't work:
I tried to make parallax mapping and look tutorials for adding plugins. I added from steam>steamapps>common> RPG Maker MV>dls>RPGmakerWeb_plugins and there three pluggings in my game files. So then i started doing game (trying to make parallax map) and tested that and it said something type error about ''x'' and that it failed to load data/actor.json? I did not know what it means, but i read in some forum that i should take from other game files that ''data/actor'' and add it in game i'm making and now it is showing me this:

 

[Andar]

Make a completely new project and start playing that project without any changes.
If you get to the (empty) starting map, then it is something wrong in your other project.
If you get an error, something has damaged the program files and you need to reinstall first.

That said, we need more info on what you did before you got to that error with the undefined - did you start a new game or did you try to load a saved game?

And "failed to load" means that something has damaged project files - that doesn't happen on its own, and it can damage more than one file, requiring more than one replacement from a new project (which is another reason to test if a new project still works or not)

 

[Sansarasansa]

Make a completely new project and start playing that project without any changes.
If you get to the (empty) starting map, then it is something wrong in your other project.
If you get an error, something has damaged the program files and you need to reinstall first.

That said, we need more info on what you did before you got to that error with the undefined - did you start a new game or did you try to load a saved game?

And "failed to load" means that something has damaged project files - that doesn't happen on its own, and it can damage more than one file, requiring more than one replacement from a new project (which is another reason to test if a new project still works or not)

There is nothing wrong with other projects (I also make new project that also works). It was just that one loaded project that stopped working after i copy those few files in that projects plugin file.
I deleted those files from there that i put in there, but it does not do anything.
What should i do? Should i just delete whole project if it it damaged and figure out new way to make parallax mapping? (would it be easiest way?)
Also thank you so much for helping!

 

[Andar]

Did you reenter the data needed?

If a file is damaged and replaced by the default files, that means that all its data is lost. Which means that after replacing it you'll need to go to that part of your database and reenter all missing data.

If you don't do that and you have a plugin that needs that data, then the plugin will cause problems until you reenter the data.

Additionally, you didn't answer my question about whether or not you loaded a saved game or started a new game in that damaged project.

 

[Sansarasansa]

Did you reenter the data needed?

If a file is damaged and replaced by the default files, that means that all its data is lost. Which means that after replacing it you'll need to go to that part of your database and reenter all missing data.

If you don't do that and you have a plugin that needs that data, then the plugin will cause problems until you reenter the data.

Additionally, you didn't answer my question about whether or not you loaded a saved game or started a new game in that damaged project.

I think i fixed it by doing again the same thing i did in first place. I added data/actor.json from other project file in that damaged one.
Problem must be happened when in first time i added that file probably from saved file where i already have make changes. Now i did that from new project and i can play that game. Ah, i'm so dumb...
Thank you for your time and patience anyway, i appreciate it!