Can´t execute Callback in Redux Thunk after Axios.post and dispatching an action

Question

I wrote a redux thunk so that after making a post request to an API an action gets dispatched and a callback gets executed:

import actionTypes from '../actions/actionTypes';
import axios from 'axios';

function postThunk(someValue, callback) {
 return dispatch => {
    try {
        let token = localStorage.getItem('token');
        const credentials = {
            headers: {
                "Authorization" : 'Bearer '+ token,
              },
            };
        const data = {
            someValue
        }
        axios.post('http://myAPI',data, credentials).then(result =>{
            dispatch({
                type: actionTypes.MY_ACTION,
                data: result,
            })
        });
        callback();
    } catch (error) {
        console.log(error);
    }
}
}

export{
 postThunk
};

The callback when i invoke the thunk is actually then just a this.props.history.push(/somelocation). So as written above it works, but I actually want the callback be inside the axios.post promise chain, because the redicrect should only happen after the POST request. Hoewever if I change the code to this:

            axios.post('http://myAPI',data, credentials).then(result =>{
            dispatch({
                type: actionTypes.MY_ACTION,
                data: result,
            });
            callback();
        });

Somehow it doesn´t work anymore. The POST request is happening and the DB gets updated but instead of redirecting the same page gets a hard reload, which makes it also very difficult to debug because i dont really see what´s happening. Does anyone has an idea what i need to look after, is it the dispatch throwing an error or do i need a redux promise middleware at this point??