LibGDX - Application crashes when call TiledMapRenderer.render()

@Override
public void render(float delta) {
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

    camera.update();
    sprite.setProjectionMatrix(camera.combined);

    mLevel.getTiledMapRenderer().getProjectionMatrix().set(camera.combined);
    Vector3 tmp = new Vector3();
    tmp.set(0, 0, 0);
    camera.unproject(tmp);
    mLevel.getTiledMapRenderer().render(tmp.x, tmp.y, camera.viewportWidth, camera.viewportHeight);

    sprite.begin();
    ...
    sprite.end();
}

Here is what I get when launching the desktop version :

Exception in thread "LWJGL Application" java.lang.IllegalArgumentException: Number of remaining buffer elements is 0, must be at least 1. Because at most 1 elements can be returned, a buffer with at least 1 elements is required, regardless of actual returned element count
    at org.lwjgl.BufferChecks.throwBufferSizeException(BufferChecks.java:162)
    at org.lwjgl.BufferChecks.checkBufferSize(BufferChecks.java:189)
    at org.lwjgl.BufferChecks.checkBuffer(BufferChecks.java:230)
    at org.lwjgl.opengl.GL15.glBufferData(GL15.java:141)
    at com.badlogic.gdx.backends.lwjgl.LwjglGL20.glBufferData(LwjglGL20.java:93)
    at com.badlogic.gdx.graphics.glutils.VertexBufferObject.bind(VertexBufferObject.java:208)
    at com.badlogic.gdx.graphics.Mesh.bind(Mesh.java:268)
    at com.badlogic.gdx.graphics.g2d.SpriteCache.begin(SpriteCache.java:868)
    at com.badlogic.gdx.graphics.g2d.tiled.TileMapRenderer.render(TileMapRenderer.java:336)
    at com.badlogic.gdx.graphics.g2d.tiled.TileMapRenderer.render(TileMapRenderer.java:286)
    at com.crunsh.libgdx.screens.GameScreen.render(GameScreen.java:102)
    at com.badlogic.gdx.Game.render(Game.java:46)
    at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:202)
    at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:131)

I've tried both this tuto and this one, and I get the same error at the same line mLevel.getTiledMapRenderer().render(tmp.x, tmp.y, camera.viewportWidth, camera.viewportHeight);.

EDIT : I just noticed that the data of my .tmx file was automatically encoded by Tiled Map Editor, so I just desactivated it, but still get the same error.
If I copy/paste this project (I mean the whole project, not only the render() method) it works but when I try to load my own map in my own project it just crashes ...

So after that I decided to simplify my render() method by just doing like the link I gave before and by using the TiledMapHelper class the author provide, so there is my render() method now:

mHelper.getCamera().update();
mHelper.render();

Still crashiiiiiiiiiiiiiingg.....
If someone can please provide some help it would be greatly appreciated because atm i'm really going mad !