Merge remote-tracking branch 'remotes/origin/MC-5691-developer-error-handling' into cms-team-1-delivery

Author: danmooney2

.gitignore

@@ -6,4 +6,5 @@
 static-error-log.xml
 .DS_Store
 .vscode
-.history/
+.history/
+/yarn-error.log

app/code/Magento/PageBuilder/Test/Mftf/Test/AdminPageBuilderReadNonMasterFormatTest.xml

@@ -121,6 +121,7 @@
         </actionGroup>
         <waitForElementVisible selector="{{CmsNewPagePageActionsSection.pageTitle}}" stepKey="waitForPageBuilderDisplay" />
         <waitForElementVisible time="1" selector="{{CmsNewPagePageActionsSection.showHideEditor}}" stepKey="waitForShowHideEditor" />
+        <waitForPageLoad stepKey="waitForEditor"/>
         <click selector="{{CmsNewPagePageActionsSection.showHideEditor}}" stepKey="clickShowHideEditor"/>
         <waitForElementVisible time="1" selector="{{CmsNewPagePageActionsSection.content}}" stepKey="waitForContentField" />
         <fillField selector="{{CmsNewPagePageActionsSection.content}}" userInput="{{cmsPageNonexistentDataRole.content}}" stepKey="enterContent"/>