erros.php

Notice: Undefined offset: 2 in C:\wamp\www\magazinecm\pages\carrinho.php on line 12
12 - $produto_Id = (int)$parametros[2];

14 - Notice: Undefined offset: 2 in C:\wamp\www\magazinecm\pages\carrinho.php on line 14
var_dump($parametros[2]);

 Notice: Trying to get property of non-object in C:\wamp\www\magazinecm\pages\carrinho.php on line 18
18 - if($fetchEstoque->estoque == '0'){
		unset($_SESSION['media_produto'][$produto_Id]);
		echo '<p id="aviso">Desculpe, mais este produto encontra-se em falta em nosso estoque!</p>';

	}

Warning: simplexml_load_file(): http://ws.correios.com.br/calculador/CalcPrecoPrazo.aspx?nCdEmpresa=&amp;sDsSenha=&amp;sCepOrigem=04510&amp;sCepDestino=186&amp;nVlPeso=82990250&amp;nVlLargura=20&amp;nVlAltura=6&amp;nCdFormato=1&amp;nVlComprimento=20&amp;sCdMaoProria=n&amp;nVlValorDeclarado=&amp;sCdAvisoRecebimento=n&amp;nCdServico=0&amp;nVlDiametro=0&amp;StrRetorno=xml:1: parser error : Extra content at the end of the document in C:\wamp\www\magazinecm\classes\Carrinho.class.php on line 137
137 - $total = 0;

Warning: simplexml_load_file(): 99&lt;/Erro&gt;&lt;MsgErro&gt;Input string was not in a correct format.&lt;/MsgErro&gt;&lt;/cServico&gt; in C:\wamp\www\magazinecm\classes\Carrinho.class.php on line 137

Warning: simplexml_load_file(): ^ in C:\wamp\www\magazinecm\classes\Carrinho.class.php on line 137

Notice: Trying to get property of non-object in C:\wamp\www\magazinecm\classes\Carrinho.class.php on line 139
$id = (int)$id;

Notice: Undefined property: Carrinho::$Valor in C:\wamp\www\magazinecm\pages\carrinho.php on line 89
89 - echo $carrinho->Valor;