EMCLI が使えない時の対処法｜Error: Session expired, Could not retrieve the platform list

C:\app\Middleware\bin>emcli get_supported_platforms
Error: Session expired. Run emcli login to establish a session.
ERROR: Could not retrieve the platform list.

C:\app\Middleware\bin>emcli login -username=sysman
Enter password :

Login successful

C:\app\Middleware\bin>emcli get_supported_platforms
-----------------------------------------------
Version = 13.4.0.0.0
 Platform = Microsoft Windows x64 (64-bit)
-----------------------------------------------
Platforms list displayed successfully.