Error while getting all jobs

[cooldean32]

Hello All,
I execute the command code below to startup web server in terminal, but get an error message from browser "Error while getting all jobs." while trying to access http://localhost:8080.
Do you have any idea what is wrong?
Any suggestion will be highly appreciated.

Command in Terminal under ui-app folder
npm install
npm run server

Response from Terminal
webpack: Compiled successfully. [HPM] Error occurred while trying to proxy request /scheduler/jobs from localhost:8080 to https://localhost:7080 (ECONNREFUSED) (https://nodejs.org/api/errors.html#errors_common_system_errors) [HPM] Error occurred while trying to proxy request /scheduler/jobs from localhost:8080 to https://localhost:7080 (ECONNREFUSED) (https://nodejs.org/api/errors.html#errors_common_system_errors)

Best Regards,
Dean Huang