Unity doesn't see files inside StreamingAssets folder

Questions & Answers
1

So I’m trying to implement shop system to my game and I decided to use Json to store data about what skins has player already bought. I’m using the code below to Load & Save data into my .json file called “file.json”:

public class gameDataSaver : MonoBehaviour
{
    public Skins skins;
    public void LoadData(){
        skins = JsonUtility.FromJson<Skins>(File.ReadAllText(Application.streamingAssetsPath + "/file.json"));
    }
    public void SaveData(){
        File.WriteAllText(Application.streamingAssetsPath + "/file.json", JsonUtility.ToJson(skins));
    }
    [System.Serializable]
    public class Skins{
        public bool[] isPurchased;
    }
}

To use Json I created “StreamingAssets” in my project assets and then created a file called “file.json”. When running the app, Unity gives me an error:
fileNotFoundException: Could not find file "C:\Users\user\TouchFollower\Assets\StreamingAssets\file.json"
I tried to check, if Unity sees the file by using the code below:

private string path;
private string jsonFileName = "file.json";

private void Start() {
        path = Path.Combine(Application.streamingAssetsPath, jsonFileName);
       
        Debug.Log("Path of streamingAssets: " + Application.streamingAssetsPath);
        Debug.Log("Path of _path variable: " + path);
        if(File.Exists(path) == false){
            Debug.Log("File not found");
        }else{
            Debug.Log("File found");
        }
    }

But everytime it only returns me “File not found”. The full output is:

Path of streamingAssets: C:/Users/user/TouchFollower/Assets/StreamingAssets

Path of _path variable: C:/Users/user/TouchFollower/Assets/StreamingAssets\file.json

File not found

I noticed, that when Unity shows me FileNotFoundException, the path uses "" sign, but when displaying Debug.Log, the path is shown with “/” sign. Could that be a problem?

2

Solution was quite simple: My OS sets any created .txt file back to .txt extension, even if I override the extension. After changing this setting everything started to work properly. Big thanks to @andrew-lukasik