https://api.helium.io/v1/vars, access exception

[ichenjy]

javascript code:
const client = new Client(Network.production)
const vars = await client.vars.get()
console.log(vars)
Transaction.config(vars)

Error: connect ETIMEDOUT 108.160.162.31:443
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1146:16) {
errno: -60,
code: 'ETIMEDOUT',
syscall: 'connect',
address: '108.160.162.31',
port: 443,
config: {
url: '/vars?keys=txn_fee_multiplier%2Cdc_payload_size%2Cstaking_fee_txn_assert_location_v1%2Cstaking_fee_txn_add_gateway_v1',
method: 'get',
headers: {
Accept: 'application/json, text/plain, /',
'User-Agent': 'axios/0.21.4'
},
baseURL: 'https://api.helium.io/v1',
transformRequest: [ [Function: transformRequest] ],
transformResponse: [ [Function: transformResponse] ],
timeout: 0,
adapter: [Function: httpAdapter],
xsrfCookieName: 'XSRF-TOKEN',
xsrfHeaderName: 'X-XSRF-TOKEN',
maxContentLength: -1,
maxBodyLength: -1,
validateStatus: [Function: validateStatus],
transitional: {
silentJSONParsing: true,
forcedJSONParsing: true,
clarifyTimeoutError: false
},
raxConfig: {
instance: [Function],
retry: 5,
noResponseRetries: 5,
currentRetryAttempt: 5,
retryDelay: 100,
backoffType: 'exponential',
httpMethodsToRetry: [Array],
checkRetryAfter: true,
maxRetryAfter: 300000,
statusCodesToRetry: [Array]
},
data: undefined
},
request: <ref *1> Writable {
_writableState: WritableState {
objectMode: false,
highWaterMark: 16384,
finalCalled: false,
needDrain: false,
ending: false,
ended: false,
finished: false,
destroyed: false,
decodeStrings: true,
defaultEncoding: 'utf8',
length: 0,
writing: false,
corked: 0,
sync: true,
bufferProcessing: false,
onwrite: [Function: bound onwrite],
writecb: null,
writelen: 0,
afterWriteTickInfo: null,
buffered: [],
bufferedIndex: 0,
allBuffers: true,
allNoop: true,
pendingcb: 0,
prefinished: false,
errorEmitted: false,
emitClose: true,
autoDestroy: true,
errored: null,
closed: false
},
_events: [Object: null prototype] {
response: [Function: handleResponse],
error: [Function: handleRequestError]
},
_eventsCount: 2,
_maxListeners: undefined,
_options: {
maxRedirects: 21,
maxBodyLength: 10485760,
protocol: 'https:',
path: '/v1/vars?keys=txn_fee_multiplier%2Cdc_payload_size%2Cstaking_fee_txn_assert_location_v1%2Cstaking_fee_txn_add_gateway_v1',
method: 'GET',
headers: [Object],
agent: undefined,
agents: [Object],
auth: undefined,
hostname: 'api.helium.io',
port: null,
nativeProtocols: [Object],
pathname: '/v1/vars',
search: '?keys=txn_fee_multiplier%2Cdc_payload_size%2Cstaking_fee_txn_assert_location_v1%2Cstaking_fee_txn_add_gateway_v1'
},
_ended: true,
_ending: true,
_redirectCount: 0,
_redirects: [],
_requestBodyLength: 0,
_requestBodyBuffers: [],
_onNativeResponse: [Function (anonymous)],
_currentRequest: ClientRequest {
_events: [Object: null prototype],
_eventsCount: 7,
_maxListeners: undefined,
outputData: [],
outputSize: 0,
writable: true,
destroyed: false,
_last: true,
chunkedEncoding: false,
shouldKeepAlive: false,
_defaultKeepAlive: true,
useChunkedEncodingByDefault: false,
sendDate: false,
_removedConnection: false,
_removedContLen: false,
_removedTE: false,
_contentLength: 0,
_hasBody: true,
_trailer: '',
finished: true,
_headerSent: true,
socket: [TLSSocket],
_header: 'GET /v1/vars?keys=txn_fee_multiplier%2Cdc_payload_size%2Cstaking_fee_txn_assert_location_v1%2Cstaking_fee_txn_add_gateway_v1 HTTP/1.1\r\n' +
'Accept: application/json, text/plain, /\r\n' +
'User-Agent: axios/0.21.4\r\n' +
'Host: api.helium.io\r\n' +
'Connection: close\r\n' +
'\r\n',
_keepAliveTimeout: 0,
_onPendingData: [Function: noopPendingOutput],
agent: [Agent],
socketPath: undefined,
method: 'GET',
maxHeaderSize: undefined,
insecureHTTPParser: undefined,
path: '/v1/vars?keys=txn_fee_multiplier%2Cdc_payload_size%2Cstaking_fee_txn_assert_location_v1%2Cstaking_fee_txn_add_gateway_v1',
_ended: false,
res: null,
aborted: false,
timeoutCb: null,
upgradeOrConnect: false,
parser: null,
maxHeadersCount: null,
reusedSocket: false,
host: 'api.helium.io',
protocol: 'https:',
_redirectable: [Circular *1],
[Symbol(kCapture)]: false,
[Symbol(kNeedDrain)]: false,
[Symbol(corked)]: 0,
[Symbol(kOutHeaders)]: [Object: null prototype]
},
_currentUrl: 'https://api.helium.io/v1/vars?keys=txn_fee_multiplier%2Cdc_payload_size%2Cstaking_fee_txn_assert_location_v1%2Cstaking_fee_txn_add_gateway_v1',
[Symbol(kCapture)]: false
},
response: undefined,
isAxiosError: true,
toJSON: [Function: toJSON]
}