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diff --git a/web/core/tests/Drupal/FunctionalJavascriptTests/WebDriverCurlService.php b/web/core/tests/Drupal/FunctionalJavascriptTests/WebDriverCurlService.php
new file mode 100644
index 000000000..13991afd5
--- /dev/null
+++ b/web/core/tests/Drupal/FunctionalJavascriptTests/WebDriverCurlService.php
@@ -0,0 +1,110 @@
+<?php
+
+namespace Drupal\FunctionalJavascriptTests;
+
+use WebDriver\Service\CurlService;
+use WebDriver\Exception\CurlExec;
+use WebDriver\Exception as WebDriverException;
+
+/**
+ * Provides a curl service to interact with Selenium driver.
+ *
+ * Extends WebDriver\Service\CurlService to solve problem with race conditions,
+ * when multiple processes requests.
+ */
+class WebDriverCurlService extends CurlService {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function execute($requestMethod, $url, $parameters = NULL, $extraOptions = []) {
+    $extraOptions += [
+      CURLOPT_FAILONERROR => TRUE,
+    ];
+    $retries = 0;
+    while ($retries < 10) {
+      try {
+        $customHeaders = [
+          'Content-Type: application/json;charset=UTF-8',
+          'Accept: application/json;charset=UTF-8',
+        ];
+
+        $curl = curl_init($url);
+        curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
+
+        switch ($requestMethod) {
+          case 'GET':
+            break;
+
+          case 'POST':
+            if ($parameters && is_array($parameters)) {
+              curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($parameters));
+            }
+            else {
+              $customHeaders[] = 'Content-Length: 0';
+            }
+
+            // Suppress "Expect: 100-continue" header automatically added by
+            // cURL that causes a 1 second delay if the remote server does not
+            // support Expect.
+            $customHeaders[] = 'Expect:';
+
+            curl_setopt($curl, CURLOPT_POST, TRUE);
+            break;
+
+          case 'DELETE':
+            curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'DELETE');
+            break;
+
+          case 'PUT':
+            if ($parameters && is_array($parameters)) {
+              curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($parameters));
+            }
+            else {
+              $customHeaders[] = 'Content-Length: 0';
+            }
+
+            // Suppress "Expect: 100-continue" header automatically added by
+            // cURL that causes a 1 second delay if the remote server does not
+            // support Expect.
+            $customHeaders[] = 'Expect:';
+
+            curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'PUT');
+            break;
+        }
+
+        foreach ($extraOptions as $option => $value) {
+          curl_setopt($curl, $option, $value);
+        }
+
+        curl_setopt($curl, CURLOPT_HTTPHEADER, $customHeaders);
+
+        $rawResult = trim(curl_exec($curl));
+
+        $info = curl_getinfo($curl);
+        $info['request_method'] = $requestMethod;
+
+        if (array_key_exists(CURLOPT_FAILONERROR, $extraOptions) && $extraOptions[CURLOPT_FAILONERROR] && CURLE_GOT_NOTHING !== ($errno = curl_errno($curl)) && $error = curl_error($curl)) {
+          curl_close($curl);
+
+          throw WebDriverException::factory(WebDriverException::CURL_EXEC, sprintf("Curl error thrown for http %s to %s%s\n\n%s", $requestMethod, $url, $parameters && is_array($parameters) ? ' with params: ' . json_encode($parameters) : '', $error));
+        }
+
+        curl_close($curl);
+
+        $result = json_decode($rawResult, TRUE);
+        if (isset($result['status']) && $result['status'] === WebDriverException::STALE_ELEMENT_REFERENCE) {
+          usleep(100000);
+          $retries++;
+          continue;
+        }
+        return [$rawResult, $info];
+      }
+      catch (CurlExec $exception) {
+        $retries++;
+      }
+    }
+    throw WebDriverException::factory(WebDriverException::CURL_EXEC, sprintf("Curl error thrown for http %s to %s%s\n\n%s", $requestMethod, $url, $parameters && is_array($parameters) ? ' with params: ' . json_encode($parameters) : '', $error));
+  }
+
+}