Internal Server Error: No suitable HttpMessageConverter found for response type

status: 500, error: "Internal Server Error" message: Could not extract response: no suitable HttpMessageConverter found for response type [class com.clone.instagram.authservice.fetchdata.model.Example] and content type [text/html;charset=utf-8]"

So strangely this error has started showing up while accessing insta API, What's strange is this happens "only sometimes", And never happened before. It works some times, some times it pops this error

const request = (options) => {
          const headers = new Headers();
        
          
            headers.append("Content-Type", "application/json");
          
        
          if (localStorage.getItem("accessToken")) {
            headers.append(
              "Authorization",
              "Bearer " + localStorage.getItem("accessToken")
            );
          }
        
          const defaults = { headers: headers };
          options = Object.assign({}, defaults, options);
        
          return fetch(options.url, options).then((response) =>
            response.json().then((json) => {
              if (!response.ok) {
                return Promise.reject(json);
              }
              return json;
            })
          );
        };
        
  export function registerInstaUserInfo(instaUserINfoRequest){
      if (!localStorage.getItem("accessToken")) {
        return Promise.reject("No access token set.");
      }
      
      console.log("inside getInstaUserInfo request ");
      return request({
        url: properties.INSTA_USER_REGISTER ,
        method: "POST",
        body: JSON.stringify(instaUserINfoRequest),
      });
    }
    
  const getInstaUserInfoFromService = (response) => {
        //store respose.data
        if (response.data.user_id) {
          console.log("setting up insta user staate ", response.data);
          localStorage.setItem("insta_user", response.data);
          cookies.set("insta_user", response.data, { path: "/" });
          console.log("cookies ", cookies.get("insta_user"));
          const fb_access_token = localStorage.getItem("accessToken");
          console.log("fb_access_token", fb_access_token);
          const user_info = registerInstaUserInfo(response.data)
            .then((res) => {
              console.log(res);
              setLinkedInstaAccounts([...linkedAccounts, res]);
            })
            .catch((err) => console.error("Hello stackoverlflowpeople this is where error happens", err));
    
          console.log("user_info", user_info);
          props.history.push("/home");
          //redirecting to account.js
          // props.history.push("/me");
        }
      };
    
  const successResponse = (code) => {
        console.log("inside success func");
        console.log(code);
        var bodyFormData = new FormData();
        bodyFormData.append("redirect_uri", properties.INSTA_REDIRECT_URL);
        bodyFormData.append("code", code);
        bodyFormData.append("client_id", properties.INSTA_CLIENT_ID);
        bodyFormData.append("client_secret", properties.INSTA_CLIENT_SECRECT);
        bodyFormData.append("grant_type", "authorization_code");
        axios({
          method: "post",
          url: properties.INSTA_ACCESS_TOKEN_URL,
          data: bodyFormData,
          headers: {
            "Content-Type": "multipart/form-data",
            Accept: "application/vnd.api+json",
          },
        })
          .then(getInstaUserInfoFromService)
          .catch(function (response) {
            //handle error
            console.log(response);
          });
      };
    
    
    ----
    //component
      <InstagramLogin
            clientId={properties.INSTA_CLIENT_ID}
            buttonText="Login"
            redirectUri={properties.INSTA_REDIRECT_URL}
            scope="user_profile,user_media"
            onSuccess={successResponse}
            onFailure={failedresponseInstagram}
          />

    

=====================THIS getInstaUserFromService is where error happens

const getInstaUserInfoFromService = (response) => {
        //store respose.data
        if (response.data.user_id) {
          console.log("setting up insta user staate ", response.data);
          localStorage.setItem("insta_user", response.data);
          cookies.set("insta_user", response.data, { path: "/" });
          console.log("cookies ", cookies.get("insta_user"));
          const fb_access_token = localStorage.getItem("accessToken");
          console.log("fb_access_token", fb_access_token);
          const user_info = registerInstaUserInfo(response.data)
            .then((res) => {
              console.log(res);
              setLinkedInstaAccounts([...linkedAccounts, res]);
            })
            .catch((err) => console.error("Hello stackoverlflowpeople this is where error happens", err));
    
          console.log("user_info", user_info);
          props.history.push("/home");
          //redirecting to account.js
          // props.history.push("/me");
        }
      };

I was using this but I have not touched headers or anything, is it something with Instagram server?