unable to set nls language workflow

210: Oracle Error: ORA-01403: No Data Found: SQL Text: SELECT NLS_LANGAUGE from WF_LANGAUGES where :1 IN(NLS_LANGAUGE, CODE)

This error occurs while you try to open an existing workflow from an Oracle Database or Save changes of an Workflow to the Database as below

My Computer -> Properties -> Advanced -> Environment variables ->

Setup new Environment variable NLS_LANG with value  'AMERICAN_AMERICA.UTF8'
reconnect it again.