Problem w Android studio [Java]

Question

Hej. Ostatnio zacząłem uczyć się Androida [Java] i napotkałem na błąd. 

Error:com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING at line 1 column 1 path $
Error:java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING at line 1 column 1 path $

    private FirebaseAuth mAuth;

    private Toolbar mToolbar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mAuth = FirebaseAuth.getInstance();

        mToolbar = (Toolbar) findViewById(R.id.main_page_toolbar);
        setSupportActionBar(mToolbar);
        getSupportActionBar().setTitle("App");

    }

    @Override
    public void onStart() {
        super.onStart();

        FirebaseUser currentUser = mAuth.getCurrentUser();
        if(currentUser == null){
            GoToStart();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);

        getMenuInflater().inflate(R.menu.main_menu, menu);

        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        super.onOptionsItemSelected(item);

        switch (item.getItemId()){
            case R.id.main_logout_btn:
                FirebaseAuth.getInstance().signOut();
                GoToStart();
                break;
            case R.id.main_settings_btn:
                Intent intent = new Intent(MainActivity.this, SettingsActivity.class);
                startActivity(intent);
                break;
        }

        return true;
    }

    private void GoToStart(){
        Intent intent = new Intent(MainActivity.this, StartActivity.class);
        startActivity(intent);
        finish();
    }

Nie wiem co może powodować ten proszę i dlatego tu jestem. 

Comments

Kod jakiś masz zamiar pokazać?

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Już, już