Receiving a blank page in Recommended Content Panel. - Receiving a blank page in Recommended Content Panel. - Alfresco - Alfresco Content Connector for Salesforce - Alfresco/Alfresco-Content-Connector-for-Salesforce/2.4/Alfresco-Content-Connector-for-Salesforce/Alfresco-Content-Connector-for-Salesforce/Using/Troubleshoot-Salesforce-Connector/Receiving-a-blank-page-in-Recommended-Content-Panel. - 2.4

This can occur when the syntax of the JSON provided in the parameters attribute of the apex:canvasApp tag in the Visualforce page is incorrect. Review the JSON you are providing in the parameters attribute.