Hello, My solution: restart splunk instance. Here is the splunkd log in case if someone needs to investigate the issue. 09-24-2018 15:42:45.284 -0700 INFO ApplicationManager - Detected app creation: splunk_app_db_connect 09-24-2018 15:42:45.453 -0700 ERROR ModularInputs - Unable to initialize modular input "server" defined inside the app "splunk_app_db_connect": Introspecting scheme=server: script running failed (exited with code 1). 09-24-2018 15:42:45.730 -0700 WARN LocalAppsAdminHandler - User 'admin' triggered the 'create' action on app 'splunk_app_db_connect', and the following objects required a restart: app-migration, checklist, db_connection_types, db_connections, db_inputs, dbx_logging, dbx_settings, identities, ui-metrics-collector 09-24-2018 15:43:02.800 -0700 ERROR ModularInputs - Unable to initialize modular input "server" defined inside the app "splunk_app_db_connect": Introspecting scheme=server: script running failed (exited with code 1). 09-24-2018 16:54:11.555 -0700 ERROR HttpListener - Exception while processing request from 127.0.0.1 for /en-US/app/splunk_app_db_connect/: Connection closed by peer 09-24-2018 16:54:11.556 -0700 ERROR HttpListener - Handler for /en-US/app/splunk_app_db_connect/ sent a 0 byte response after earlier claiming a Content-Length of 119! Thanks, Utsav ... View more