Казалось бы, на ровном месте, вот так, но некрасиво, работает:

import { ReactComponent as WizardIconSvg } from '../../icons/Wizard-Icon.svg';
...
//  где то ниже в return ();
return ( ...............
  <WizardIconSvg style={{width: 32,height:32,fill:'white',strokeWidth:'10px',stroke:'white' }}/>
........... );

а вот по правильному — вылетает ошибка

import { ReactComponent as WizardIconSvg } from '../../icons/Wizard-Icon.svg';
const WizardIcon = <WizardIconSvg style={{width: 32,height:32,fill:'white',strokeWidth:'10px',stroke:'white' }}/>;
...
//  где то ниже в return ();
return ( ............... <WizardIcon /> ...............)

Причем информации из ошибки — НОЛЬ. Кто из них object?!!! только style тут object. И что не так?

Element type is invalid: expected a string (for built-in components) 
or a class/function (for composite components) but got: object.

Check the render method of `DiskBenchmarkDialog`.
▶ 29 stack frames were collapsed.
Module../src/index.js
src/index.js:11
   8 | const baseUrl = document.getElementsByTagName('base')[0].getAttribute('href');
   9 | const rootElement = document.getElementById('root');
  10 | 
> 11 | ReactDOM.render(
  12 |   <BrowserRouter basename={baseUrl}>
  13 |     <App />
  14 |   </BrowserRouter>,
View compiled
__webpack_require__
/home/user/RiderProjects/KernelManagementLab/Universe.W3Top/ClientApp/webpack/bootstrap:781
  778 | };
  779 | 
  780 | // Execute the module function
> 781 | modules[moduleId].call(module.exports, module, module.exports, hotCreateRequire(moduleId));
      | ^  782 | 
  783 | // Flag the module as loaded
  784 | module.l = true;
View compiled
fn
/home/user/RiderProjects/KernelManagementLab/Universe.W3Top/ClientApp/webpack/bootstrap:149
  146 |         );
  147 |         hotCurrentParents = [];
  148 |     }
> 149 |     return __webpack_require__(request);
      | ^  150 | };
  151 | var ObjectFactory = function ObjectFactory(name) {
  152 |     return {
View compiled
0
http://localhost:5010/static/js/main.chunk.js:24885:18
__webpack_require__
/home/user/RiderProjects/KernelManagementLab/Universe.W3Top/ClientApp/webpack/bootstrap:781
  778 | };
  779 | 
  780 | // Execute the module function
> 781 | modules[moduleId].call(module.exports, module, module.exports, hotCreateRequire(moduleId));
      | ^  782 | 
  783 | // Flag the module as loaded
  784 | module.l = true;
View compiled
checkDeferredModules
/home/user/RiderProjects/KernelManagementLab/Universe.W3Top/ClientApp/webpack/bootstrap:45
  42 |     }
  43 |     if(fulfilled) {
  44 |         deferredModules.splice(i--, 1);
> 45 |         result = __webpack_require__(__webpack_require__.s = deferredModule[0]);
     | ^  46 |     }
  47 | }
  48 | return result;
View compiled
Array.webpackJsonpCallback [as push]
/home/user/RiderProjects/KernelManagementLab/Universe.W3Top/ClientApp/webpack/bootstrap:32
  29 |     deferredModules.push.apply(deferredModules, executeModules || []);
  30 | 
  31 |     // run deferred modules when all chunks ready
> 32 |     return checkDeferredModules();
     | ^  33 | };
  34 | function checkDeferredModules() {
  35 |     var result;
View compiled
(anonymous function)
http://localhost:5010/static/js/main.chunk.js:1:57
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Реакт 16.8.5 если это важно — ошибка в development mode выскакивает (npm start). В проде не проверял.