When using Axios, in order to pass custom headers, supply an object containing the headers as the last argument
Modify your Axios request like:
const headers = { 'Content-Type': 'application/json', 'Authorization': 'JWT fefege...' } axios.post(Helper.getUserAPI(), data, { headers: headers }) .then((response) => { dispatch({ type: FOUND_USER, data: response.data[0] }) }) .catch((error) => { dispatch({ type: ERROR_FINDING_USER }) })