500 Internal Server Error pops up while accessing Datastore dashboard from CFME UI

Issue

• I have a lot of popup error messages with the dashboard when I choose "Compute" > "Infrastructure" > "Datastores" on the dashboard, and "All data stores" does not appear on it.

• Getting below error as a pop-up:

  URL / storage / report_data
  
  Status 500 Internal Server Error
  
  Content-Type text / html; charset = utf-8
  
  Data Perform substitution. 'div' - notifications - drawer - container 'ng - controller =' notifications DrawerController as vm '> <div allow - expand =' true 'custom - scope =' vm Notice 'heading-include =' / static / notification_drawer / notification-heading.html 'id =' miq - notifications - drawer 'miq - notification - drawer' drawer - hidden = '! vm.notifications DrawerShown' notification - footer - include = '/ static / notification_drawer / notification - footer.html' notification - groups = 'vm.notificationGroups' subheading - include = '/ static / notification_drawer / notification-subheading.html'> </ div> </ div> <div id = 'toast-list-container' <field set> <font style = 'font-size: 116%; color: black'> & # x2460; </ font> Access the management engine from multiple tabs or windows of the same browser on one machine. Please close the duplicate browser session and then select the menu option. </ fieldset> <fieldset> <font style = 'font-size: 116%; color: black'> & # x 2461; </ font> When pressing the "back" button during a session. & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; Close the duplicate browser session and then select the menu option. </ fieldset> <fieldset> <font style = 'font-size: 116%; color: black'> & # x 2462; </ font> Internal system error. & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; Please contact your supervisor. </ field> <br> <h2> Error text: </ h2> <br> <h3> no implicit conversion of nil into String [storage / explorer] </ h3> </ div> </ div> </ div> </ div>