next / axios - ERR_INVALID_URL

TypeError [ERR_INVALID_URL]: Invalid URL
    at new NodeError (node:internal/errors:387:5)
    at URL.onParseError (node:internal/url:565:9)
    at new URL (node:internal/url:641:5)
    at dispatchHttpRequest (file:///Users/kyurankim/dev-course/project/pomo/node_modules/axios/lib/adapters/http.js:181:20)
    at new Promise (<anonymous>)
    at http (file:///Users/kyurankim/dev-course/project/pomo/node_modules/axios/lib/adapters/http.js:117:10)
    at Axios.dispatchRequest (file:///Users/kyurankim/dev-course/project/pomo/node_modules/axios/lib/core/dispatchRequest.js:51:10)
    at Axios.request (file:///Users/kyurankim/dev-course/project/pomo/node_modules/axios/lib/core/Axios.js:142:33)
    at Axios.httpMethod [as post] (file:///Users/kyurankim/dev-course/project/pomo/node_modules/axios/lib/core/Axios.js:181:19)
    at Function.wrap [as post] (file:///Users/kyurankim/dev-course/project/pomo/node_modules/axios/lib/helpers/bind.js:5:15)
    at creaetPost (webpack-internal:///(api)/./pages/api/posts/create.ts:14:76)
    at Object.apiResolver (/Users/kyurankim/dev-course/project/pomo/node_modules/next/dist/server/api-utils/node.js:363:15)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async DevServer.runApi (/Users/kyurankim/dev-course/project/pomo/node_modules/next/dist/server/next-server.js:487:9)
    at async Object.fn (/Users/kyurankim/dev-course/project/pomo/node_modules/next/dist/server/next-server.js:749:37)
    at async Router.execute (/Users/kyurankim/dev-course/project/pomo/node_modules/next/dist/server/router.js:253:36)
    at async DevServer.run (/Users/kyurankim/dev-course/project/pomo/node_modules/next/dist/server/base-server.js:384:29)
    at async DevServer.run (/Users/kyurankim/dev-course/project/pomo/node_modules/next/dist/server/dev/next-dev-server.js:741:20)
    at async DevServer.handleRequest (/Users/kyurankim/dev-course/project/pomo/node_modules/next/dist/server/base-server.js:322:20) {
  input: '/posts/create',
  code: 'ERR_INVALID_URL'
}