Blank page appears when trying to open any form in Service PortalIssue A blank page appears when the user try to open any form in portal. For example: https://<your-instance>.service-now.com/sp?id=form&table=<tableName>&sys_id=<sys_id of the record> CauseThe issue arises when a significant volume of data is downloaded to DOM. When the issue is noticed, the following warning message occurs in the logs. 07:47:30.466 Javascript compiler exception: String object would exceed maximum permitted size of 33554432 in: JSON.stringify(data)ResolutionAll form fields, related lists, client scripts, and UI scripts are loaded when the form is loaded. Verify if any User Interface (UI) scripts are loading large scripts. If the UI script is identified, changing it to "Desktop" should fix the problem.Related LinksKB0958055 - Form does not load in service portal KB0550574 - Troubleshooting form issues