Problem add component in zoho crm dashboard

Problem add component in zoho crm dashboard

when we add a component in zoho crm --> dashboard 
we add the component name and select Source Report and click next button it display alert " Dashboard Item Name already exists"

we add a new dashboard with different name and add component but it again alert the same message
this error was coming from yesterday.
 
Please let me know how to fix it 

MANY OF THANKS