Session expired modal appearing after axios request only on production

I have a axios request in a Vue component for searching images in Unsplash. It workfs perfect on localhost but on production shows the Session expired modal and redirects you to the login page.

            async getImages() {
                if (this.term.length > 2) {

                    this.searching = true;

                    axios.get(this.fullEndpoint)
                        .then(response => {

                            this.results = response.data.results;
                            this.searching = false;
                        })
                        .catch(error => console.log(error));
                }
            }

Any ideas? Thanks!