Locally update jmix-sampler https://github.com/Haulmont/jmix-sampler to Jmix 1.1.0-SNAPSHOT version. And make a smoke test of a components (just make sure that they work). Also, before testing, open a console in the browser's dev-tools and monitor it during the test - there should be no errors.
Contains fix for Denial of service in DataCommunicator class in Vaadin 8 security issue.
QA
Locally update jmix-sampler https://github.com/Haulmont/jmix-sampler to Jmix 1.1.0-SNAPSHOT version. And make a smoke test of a components (just make sure that they work). Also, before testing, open a console in the browser's dev-tools and monitor it during the test - there should be no errors.