diff --git a/src/Vtiger.php b/src/Vtiger.php
index d73bf59..9d8da97 100644
--- a/src/Vtiger.php
+++ b/src/Vtiger.php
@@ -98,7 +98,7 @@ protected function sessionId()
             $sessionData = $this->storeSession();
         }
 
-        if (isset($json->sessionid)) {
+        if (isset($sessionData->sessionid)) {
             $sessionId = $sessionData->sessionid;
         } else {
             $sessionId = $this->login($sessionData);
@@ -140,7 +140,7 @@ protected function login($sessionData)
             ]);
 
             // decode the response
-            $loginResult = json_decode($response->getBody());
+            $loginResult = $this->_processResponse($response);
             $tryCounter++;
         } while (!isset($loginResult->success) && $tryCounter <= $this->maxRetries);
 
@@ -236,7 +236,7 @@ protected function getToken()
             ]);
 
             $tryCounter++;
-        } while (!isset(json_decode($response->getBody())->success) && $tryCounter <= $this->maxRetries);
+        } while (!isset($this->_processResponse($response)->success) && $tryCounter <= $this->maxRetries);
 
         if ($tryCounter >= $this->maxRetries) {
             throw new VtigerError("Could not complete get token request within ".$this->maxRetries." tries", 6);
@@ -272,7 +272,7 @@ protected function close($sessionId)
         }
 
         // send a request to close current connection
-        $response = $this->client->request('GET', $this->url, [
+        $response = $this->client->request('POST', $this->url, [
             'query' => [
                 'operation' => 'logout',
                 'sessionName' => $sessionId
@@ -492,8 +492,7 @@ protected function _processResult($response)
 
         $this->_checkResponseStatusCode($response);
 
-        // decode the response
-        $data = json_decode($response->getBody());
+        $data = $this->_processResponse($response);
 
         if (!isset($data->success)) {
             throw new VtigerError("Success property not set on VTiger response", 2);
@@ -507,6 +506,28 @@ protected function _processResult($response)
 
     }
 
+    /**
+     * Get the json decoded response from either the body or the contents
+     *
+     * @param ResponseInterface $response
+     *
+     * @return object
+     */
+    protected function _processResponse($response)
+    {
+
+        // decode the response
+        if (!empty($response->getBody()->getContents())) {
+            $response->getBody()->rewind();
+            $data = json_decode($response->getBody()->getContents());
+        } else {
+            $data = json_decode($response->getBody());
+        }
+
+        return $data;
+
+    }
+
     /**
      * Check the response code to make sure it isn't anything but 200
      *