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Issues writing to json files Unity android Build (Focus 3)

I am saving data-files on the persistant datapath of the android device focus 3 I am building for. The current file saving and editing system seems to work well in the editor and works if i create and write to the file in the same "session" but as soon as the scene or build is reloaded then i get the following error when trying to write to the file.
02-06 09:33:52.696 16111 16133 E Unity : IOException: Sharing violation on path /storage/emulated/0/Android/data/com.Project.ProjectName/files/gamedata.json
02-06 09:33:52.696 16111 16133 E Unity : at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.Int32 bufferSize, System.Boolean anonymous,
What could be the cause of this. I use the toJson() function to write and read the plaintext file-class.
gameData = JsonUtility.FromJson<GameData>(text);
FileStream iStream = new FileStream(plaintext_saveFile, FileMode.OpenOrCreate);
StreamWriter sWriter = new StreamWriter(iStream);
string jsonString = JsonUtility.ToJson(gameData);
sWriter.Write(jsonString);
Additionally when trying to implement a simple AES cryptography solution i get the following error:
02-06 09:31:19.699 16111 16133 E Unity : CryptographicException: Bad PKCS7 padding. Invalid length 82.
02-06 09:31:19.699 16111 16133 E Unity : at Mono.Security.Cryptography.SymmetricTransform.ThrowBadPaddingException (System.Security.Cryptography.PaddingMode padding, System.Int32 length, System.Int32 position) [0x00000] in <00000000000000000000000000000000>:0
02-06 09:31:19.699 16111 16133 E Unity : at Mono.Security.Cryptography.SymmetricTransform.FinalDecrypt (System.Byte[] inputBuffer, System.Int32 inputOffset, System.Int32 inputCount) [0x00000] in <00000000000000000000000000000000>:0
I mostly attempted to follow this tutorial: https://videlais.com/2021/02/28/encrypting-game-data-with-unity/
I have tried changing the filestream mode from create to openandcreate.

It looks like you're still using the default package name ("com.Project.ProjectName"). Unity may have some additional protection for data under that name (not sure, though). I recommend going to Project Settings -> Player Settings -> Other Settings -> and set the Package Name field to a unique value. Then try again.

Getting "NotImplementedException" when attempting Azure connection with Unity (c#)

I'm using Unity 2019.3.6f1. I have created a simple DLL for connecting to Azure and uploading a file. However, when I call this DLL to attemp connecting to the Azure blob storage I get the following stack trace:
NotImplementedException: The method or operation is not implemented.
System.Net.Http.HttpClientHandler.get_MaxConnectionsPerServer () (at
<7ebf3529ba0e4558a5fa1bc982aa8605>:0)
Azure.Core.Pipeline.ServicePointHelpers.SetLimits
(System.Net.Http.HttpMessageHandler messageHandler) (at
:0)
Azure.Core.Pipeline.HttpClientTransport.CreateDefaultClient () (at
:0)
Azure.Core.Pipeline.HttpClientTransport..ctor () (at
:0)
Azure.Core.Pipeline.HttpClientTransport..cctor () (at
:0) Rethrow as
TypeInitializationException: The type initializer for
'Azure.Core.Pipeline.HttpClientTransport' threw an exception.
Azure.Core.ClientOptions..ctor () (at
:0)
Azure.Storage.Blobs.BlobClientOptions..ctor
(Azure.Storage.Blobs.BlobClientOptions+ServiceVersion version) (at
:0)
Azure.Storage.Blobs.BlobServiceClient..ctor (System.String
connectionString, Azure.Storage.Blobs.BlobClientOptions options) (at
:0)
Azure.Storage.Blobs.BlobServiceClient..ctor (System.String
connectionString) (at :0)
Cineon.UnityToAzureConnection+d__1.MoveNext () (at
<5252723c79f94a8cb77bb25e3b9f0396>:0)
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () (at
<437ba245d8404784b9fbab9b439ac908>:0)
System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.b__6_0
(System.Object state) (at <437ba245d8404784b9fbab9b439ac908>:0)
UnityEngine.UnitySynchronizationContext+WorkRequest.Invoke () (at
:0)
UnityEngine.UnitySynchronizationContext:ExecuteTasks()
Here is my DLL code (in line with this Microsoft quickstart guide):
public class UnityToAzureConnection
{
private readonly static string m_connectionString = "CENSORED";
public static async void CreateConnection(string _path, string _fileName)
{
BlobServiceClient blobServiceClient = new BlobServiceClient(m_connectionString);
BlobContainerClient containerClient = await blobServiceClient.CreateBlobContainerAsync("imagetest");
BlobClient blobClient = containerClient.GetBlobClient(_fileName);
using (FileStream _fs = File.Open(Path.Combine(_path, _fileName), FileMode.Open))
{
await blobClient.UploadAsync(_fs, true);
}
}
}
I simply call this DLL's CreateConnection method and pass in my "Application.dataPath" and a filename. However, I then get the above exception.
I have pulled all other needed DLL's from the project build folder into the plugin folder, so am unsure why this is occuring.
Any assistance would be greatly appreciated.
Please note that I am just starting to move out of my comfort zone here, so I'm hoping that my post is to StackOverflow's standard of questions.
[P.S.] Obviously "CENSORED" isn't my actual connection string, just keeping sensitive info hidden.
UPDATE 29/05/2021 I have confirmed that my connection code DOES work when used in a simple .net console app (however, I did have to adjust the containername to be all lowercase). This error only occurs in Unity. Again, any and all help would be appreciated.

As I mentioned here, try it once.
If you have a lower version of Unity, Azure.Core ver. 1.19.0 may be better.
https://forum.unity.com/threads/attempting-to-connec-to-azure-blobs-results-in-notimplementedexception.1117705/

I have experienced the same exception in BlobServiceClient constructor in my mobile project.
The problem was in the version of Azure.Storage.Blobs package. I used the most recent version 12.12.0, and it caused the exception.
When I downgraded Azure.Storage.Blobs package to 12.9.1 all things worked fine.

Unable to load shared library 'python37' or one of its dependencies

I am quite new to dotnet and Keras.NET, and I was trying to set it up on a goorm.io container. After installing the prerequisites (adding $HOME/.keras/keras.json for Tensorflow backend and pip install numpy), and then adding Keras.NET, I tried to run the XOR sample code, but ran into an error.
Unhandled exception. System.DllNotFoundException: Unable to load shared library 'python37' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: libpython37: cannot open shared object file: No such file or directory
at Python.Runtime.Runtime.Py_IsInitialized()
at Python.Runtime.Runtime.Initialize(Boolean initSigs)
at Python.Runtime.PythonEngine.Initialize(IEnumerable1 args, Boolean setSysArgv, Boolean initSigs) at Python.Runtime.PythonEngine.Initialize(Boolean setSysArgv, Boolean initSigs) at Python.Runtime.PythonEngine.Initialize() at Numpy.np.InstallAndImport(Boolean force) at Numpy.np.<>c.<.cctor>b__599_0() at System.Lazy1.ViaFactory(LazyThreadSafetyMode mode)
at System.Lazy1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor) at System.Lazy1.CreateValue()
at System.Lazy1.get_Value() at Numpy.np.get_self() at Numpy.np.get_float32() at Numpy.DtypeExtensions.GetDtype(Object obj) at Numpy.np.array[T](T[,] object, Dtype dtype, Nullable1 copy, String order, Nullable1 subok, Nullable1 ndmin)
at Proj.Program.Main(String[] args) in /workspace/XOR/Proj/Program.cs:line 14
I do not know how to share with the python37 directory. If someone could direct me in the right direction, it would be much appreciated. By the way, I am using Linux if that helps.
Thanks

Can't write input to process C# Mono

I'm having a issue trying to write input to linux process. Here the code goes:
System.Diagnostics.Process process = new System.Diagnostics.Process();
process.StartInfo.WorkingDirectory = "'/home/"+user+"/pacotes/"+nome_pacote.Text+"-1.0/'";
process.StartInfo.FileName="dh_make";
process.StartInfo.Arguments="-n -s";
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardInput = true;
process.Start();
Thread.Sleep(3000);
process.StandardInput.WriteLine();
And here goes the error:
System.IO.IOException: Write fault on path /home/vinholi/Ubuntu One/Uso do linux em flash drives/Programa gerador de .deb/GeradorDeb/GeradorDeb/bin/Debug/[Unknown]
at System.IO.FileStream.FlushBuffer (System.IO.Stream st) [0x00000] in :0
at System.IO.FileStream.FlushBuffer () [0x00000] in :0
at System.IO.FileStream.Dispose (Boolean disposing) [0x00000] in :0

One likely explanation for this error is that the process exited before you're attempting to write to it. I tried this with /bin/date and a legitimate StartInfo.WorkingDirectory and the assembly is /Workspace/export/misc/H.exe. This yields:
Unhandled Exception:
System.IO.IOException: Write fault on path /Workspace/export/misc/[Unknown]
at System.IO.FileStream.WriteInternal (System.Byte[] src, Int32 offset, Int32 count) [0x00097] in /Workspace/mono/mcs/class/corlib/System.IO/FileStream.cs:658
at System.IO.FileStream.Write (System.Byte[] array, Int32 offset, Int32 count) [0x000aa] in /Workspace/mono/mcs/class/corlib/System.IO/FileStream.cs:634
at System.IO.StreamWriter.FlushBytes () [0x00043] in /Workspace/mono/mcs/class/corlib/System.IO/StreamWriter.cs:222
at System.IO.StreamWriter.FlushCore () [0x00012] in /Workspace/mono/mcs/class/corlib/System.IO/StreamWriter.cs:203
at System.IO.StreamWriter.Write (System.Char[] buffer) [0x00022] in /Workspace/mono/mcs/class/corlib/System.IO/StreamWriter.cs:351
at System.IO.TextWriter.WriteLine () [0x00000] in /Workspace/mono/mcs/class/corlib/System.IO/TextWriter.cs:257
at X.Main () [0x00066] in /Workspace/export/misc/H.cs:17
You are getting this every time when you're using an invalid directory in process.StartInfo.WorkingDirectory. There's nothing that can be done about that, though the error message should be made clearer.
Your directory is invalid because of the quotation marks. You also should not concatenate path names the way you did as it makes your application non-portable to non-Unix operating systems. Instead, write it as:
var home = Environment.GetFolderPath (Environment.SpecialFolder.UserProfile);
process.StartInfo.WorkingDirectory = Path.Combine (home, "pacotes", nome_pacote.Text+"-1.0");
Using Environment.GetFolderPath() makes it easier to run your application on a Mac (where home directories are in /Users/<username> instead of /home/<username>).

One other possibility is that the binary that you're launching is a dangling symlink. Check if the binary exists or is a symlink pointing to a valid binary.

As another response stated "One likely explanation for this error is that the process exited before you're attempting to write to it."
And that was the problem I had -- even after setting the WorkingDirectory as described in the other answer. And in your same situation: C#, Mono, Ubuntu.
Ultimately the solution in my case was to set the Arguments so that the process was not exiting, and was really trying to read input from the StandardInput.

The path you are trying to write too can't be written too.
" /home/vinholi/Ubuntu One/Uso do linux em flash drives/Programa gerador de .deb/GeradorDeb/GeradorDeb/bin/Debug/"
Looks like its a usb drive. Check the following:
Its not readonly.
Its not been mounted readonly.
The usb drive is not out of space.

MonoTouch iOS application can't find files in directory on device - works on simulator

If I run this code on the device, it returns "got it":
if (Directory.Exists (NSBundle.MainBundle.BundlePath + "/ARCSDev")) {
Console.WriteLine ("got it");
} else {
Console.WriteLine ("can't find it");
}
Which means the directory is in the main bundle.
I need to use that file in this method call:
private void generateChart (int chartNumber, string palette)
{
string filePath = NSBundle.MainBundle.BundlePath + "/ARCSDev";
Console.WriteLine("Filepath - " + filePath);
Loader loader = new Loader (filePath);
loader.LoadChart (Convert.ToString (chartNumber));
The above code works fine on the simulator, but not on the device.
I get the following stack trace when the error occurs on the device:
System.InvalidOperationException: Operation is not valid due to the current state of the object
at System.Linq.Enumerable.Max[TileIndexRecord] (IEnumerable`1 source, System.Func`2 selector) [0x00000] in <filename unknown>:0
at MyCompany.Data.Arcs.Loader.ExtractWriteableBitmap (MyCompany.Data.Arcs.Records.RGBPaletteRecord rgbPalette, Double dpi, MyCompany.Data.Arcs.Raschts.ChartIndexFile indexFile, MyCompany.Data.Arcs.Raschts.RasterChartFile chartFile) [0x00000] in /Users/me/Desktop/ARCSViewer/ARCSViewer/Loader.cs:571
at MyCompany.Data.Arcs.Loader.GetHiResImage (MyCompany.Data.Arcs.Records.RGBPaletteRecord rgbPalette) [0x00000] in /Users/me/Desktop/ARCSViewer/ARCSViewer/Loader.cs:362
at ARCSViewer.SecondViewController.generateChart (Int32 chartNumber, System.String palette) [0x0004e] in /Users/me/Desktop/ARCSViewer/ARCSViewer/SecondViewController.cs:118
at ARCSViewer.SecondViewController.ViewDidAppear (Boolean animated) [0x00007] in /Users/me/Desktop/ARCSViewer/ARCSViewer/SecondViewController.cs:84
at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0004c] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:38
at ARCSViewer.Application.Main (System.String[] args) [0x00000] in /Users/me/Desktop/ARCSViewer/ARCSViewer/Main.cs:17
The directory contains unix executable files and radiance files.
Can anyone explain whats going on? The file is definitely in the right place (the bundle) as I've tested the code that checks for existence with other files that I know to be there as well..

It might be an issue of case sensitivity, the simulator is case-insensitive while the device is case sensitive. Check your files to see if you're accessing all of them with the right case (i.e. not only the directory).

The permissions on the devices are very different (far more restricted) from the simulator. There's a lot of place you do not have access for various reasons (e.g. changing some files would break the application digital signature which would disallow your application from running anymore).
Also if your application does not follow Apple guidelines on where (and when) to store data your application will be rejected (if you target the appstore).
There's a nice article from Xamarin on how to work with the iOS file system.

I solved the problem, several parts of my application use code like below:
fs = new FileStream(fileName, FileMode.Open);
I needed to change every occurrence of FileStream() to the following:
fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
As my files are in the bundle and don't need to make use of write operations, this limits the file stream to only read operations and allowed the files to be read in properly.