#fixed code
                             public void manage(Architecture arch, String version) {
		try {
			boolean getLatest = version == null || version.isEmpty()
					|| version.equalsIgnoreCase(DriverVersion.LATEST.name())
					|| version.equalsIgnoreCase(
							DriverVersion.NOT_SPECIFIED.name());

			String driverInCache = null;
			if (!getLatest) {
				versionToDownload = version;
				driverInCache = existsDriverInCache(Downloader.getTargetPath(),
						getDriverName(), version);
			}

			if (driverInCache != null) {
				System.setProperty(VERSION_PROPERTY, version);
				exportDriver(getExportParameter(), driverInCache);

			} else {

				// Get the complete list of URLs
				List<URL> urls = getDrivers();
				if (!urls.isEmpty()) {
					List<URL> candidateUrls;
					boolean continueSearchingVersion;

					do {
						// Get the latest or concrete version
						if (getLatest) {
							candidateUrls = getLatest(urls, getDriverName());
						} else {
							candidateUrls = getVersion(urls, getDriverName(),
									version);
						}
						if (versionToDownload == null) {
							break;
						}

						log.trace("All URLS: {}", urls);
						log.trace("Candidate URLS: {}", candidateUrls);

						if (this.getClass().equals(EdgeDriverManager.class)) {
							// Microsoft Edge binaries are different
							continueSearchingVersion = false;
						} else {
							// Filter by architecture and OS
							candidateUrls = filter(candidateUrls, arch);

							// Find out if driver version has been found or not
							continueSearchingVersion = candidateUrls.isEmpty()
									&& getLatest;
							if (continueSearchingVersion) {
								log.debug("No valid binary found for {} {}",
										getDriverName(), versionToDownload);
								urls = removeFromList(urls, versionToDownload);
								versionToDownload = null;
							}
						}

					} while (continueSearchingVersion);

					if (candidateUrls.isEmpty()) {
						String versionStr = getLatest ? "(latest version)"
								: version;
						String errMessage = getDriverName() + " " + versionStr
								+ " for " + MY_OS_NAME + arch.toString()
								+ " not found in " + getDriverUrl();
						log.error(errMessage);
						throw new RuntimeException(errMessage);
					}

					for (URL url : candidateUrls) {
						String export = candidateUrls.contains(url)
								? getExportParameter() : null;
						System.setProperty(VERSION_PROPERTY, versionToDownload);
						Downloader.download(url, versionToDownload, export,
								getDriverName());
					}
				}
			}

		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
#vulnerable code 
                             public void manage(Architecture arch, String version) {
		try {
			boolean getLatest = version == null || version.isEmpty()
					|| version.equalsIgnoreCase(DriverVersion.LATEST.name())
					|| version.equalsIgnoreCase(
							DriverVersion.NOT_SPECIFIED.name());

			String driverInCache = null;
			if (!getLatest) {
				driverInCache = existsDriverInCache(Downloader.getTargetPath(),
						getDriverName(), version);
			}

			if (driverInCache != null) {
				System.setProperty(VERSION_PROPERTY, version);
				exportDriver(getExportParameter(), driverInCache);

			} else {

				// Get the complete list of URLs
				List<URL> urls = getDrivers();
				if (!urls.isEmpty()) {
					List<URL> candidateUrls;
					boolean continueSearchingVersion;

					do {
						// Get the latest or concrete version
						if (getLatest) {
							candidateUrls = getLatest(urls, getDriverName());
						} else {
							candidateUrls = getVersion(urls, getDriverName(),
									version);
						}
						if (versionToDownload == null) {
							break;
						}

						if (this.getClass().equals(EdgeDriverManager.class)) {
							// Microsoft Edge binaries are different
							continueSearchingVersion = false;
						} else {
							// Filter by architecture and OS
							candidateUrls = filter(candidateUrls, arch);

							// Find out if driver version has been found or not
							continueSearchingVersion = candidateUrls.isEmpty()
									&& getLatest;
							if (continueSearchingVersion) {
								log.debug("No valid binary found for {} {}",
										getDriverName(), versionToDownload);
								urls = removeFromList(urls, versionToDownload);
								versionToDownload = null;
							}
						}

					} while (continueSearchingVersion);

					if (candidateUrls.isEmpty()) {
						String versionStr = getLatest ? "(latest version)"
								: version;
						String errMessage = getDriverName() + " " + versionStr
								+ " for " + MY_OS_NAME + arch.toString()
								+ " not found in " + getDriverUrl();
						log.error(errMessage);
						throw new RuntimeException(errMessage);
					}

					for (URL url : candidateUrls) {
						String export = candidateUrls.contains(url)
								? getExportParameter() : null;
						System.setProperty(VERSION_PROPERTY, versionToDownload);
						Downloader.download(url, versionToDownload, export,
								getDriverName());
					}
				}
			}

		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	} 
                            #location 72 
                            #vulnerability type NULL_DEREFERENCE