public static void handleError(DAVException error, HttpServletResponse servletResponse) throws IOException {
		SVNDebugLog.getDefaultLog().logFine(SVNLogType.NETWORK, error);
		DAVResponse response = error.getResponse();
		if (response == null) {
			DAVException stackErr = error;
			while (stackErr != null && stackErr.getTagName() == null) {
				stackErr = stackErr.getPreviousException();
			}

			if (stackErr != null && stackErr.getTagName() != null) {
				servletResponse.setContentType(XML_CONTENT_TYPE);
				servletResponse.setStatus(stackErr.getResponseCode());

				StringBuffer errorMessageBuffer = new StringBuffer();
				SVNXMLUtil.addXMLHeader(errorMessageBuffer);
				errorMessageBuffer.append('\n');
				errorMessageBuffer.append("<D:error xmlns:D=\"DAV:\"");

				if (stackErr.getMessage() != null) {
					errorMessageBuffer.append(" xmlns:m=\"http://apache.org/dav/xmlns\"");
				}

				if (stackErr.getNameSpace() != null) {
					errorMessageBuffer.append(" xmlns:C=\"");
					errorMessageBuffer.append(stackErr.getNameSpace());
					errorMessageBuffer.append("\">\n<C:");
					errorMessageBuffer.append(stackErr.getTagName());
					errorMessageBuffer.append("/>");
				} else {
					errorMessageBuffer.append(">\n<D:");
					errorMessageBuffer.append(stackErr.getTagName());
					errorMessageBuffer.append("/>");
				}

				if (stackErr.getMessage() != null) {
					errorMessageBuffer.append("<m:human-readable errcode=\"");
					errorMessageBuffer.append(stackErr.getErrorID());
					errorMessageBuffer.append("\">\n");
					errorMessageBuffer.append(SVNEncodingUtil.xmlEncodeCDATA(stackErr.getMessage()));
					errorMessageBuffer.append('\n');
					errorMessageBuffer.append("</m:human-readable>\n");
				}
				errorMessageBuffer.append("</D:error>\n");
				servletResponse.getWriter().print(errorMessageBuffer.toString());
				SVNDebugLog.getDefaultLog().logFine(SVNLogType.NETWORK, errorMessageBuffer.toString());
				return;
			}
			servletResponse.setStatus(error.getResponseCode());
			return;
		}

		DAVXMLUtil.sendMultiStatus(response, servletResponse, error.getResponseCode(), null);
	}
Handler for error.

@param error           error occurred
@param servletResponse response
@throws IOException occurs when IO has problem
ngrinder-controller/src/main/java/org/ngrinder/script/controller/SvnDavController.java