test: add cy test for rendering errors

Author: elevatebart

tests/e2e/specs/CheckErrors.js

@@ -0,0 +1,10 @@
+describe("Render Errors", () => {
+  beforeEach(() => {
+    cy.visit("/");
+  });
+
+  it("does not render an error", () => {
+    cy.contains("More examples").click();
+    cy.get("[class*='Preview_error']").should("not.exist");
+  });
+});