Unit Test Error/Build Failure

[SirCoop]

Failed unit tests are causing build failures. Here is the error:

Test suite failed to run
[14:44:48][Step 6/10]
[14:44:48][Step 6/10] TypeError: Cannot read property 'simpleTypes' of undefined
[14:44:48][Step 6/10]
[14:44:48][Step 6/10] 2 | import PropTypes from 'prop-types';
[14:44:48][Step 6/10] 3 | import _ from 'lodash';
[14:44:48][Step 6/10] > 4 | import SchemaForm from 'material-ui-react-jsonschema-form';
[14:44:48][Step 6/10] | ^

Does this package have a bug that causes this to fail? I cannot figure out why this import causes an issue during unit tests.

App Info:
"react": "^16.8.6",
"@material-ui/core": "^4.1.3",
"material-ui-react-jsonschema-form": "^0.2.0",