Hey there!
Reason
Check /var/log/Bigdata/omm/oms/install_oms.log and find the following error information:
http://10.88.69.40:7088/idp-edit-service/editor/image/11108756775/A-1_1_en-us_image_0084227771.png
Manually run the involved commands.
http://10.88.69.41:7088/idp-edit-service/editor/image/11108756775/A-1_1_en-us_image_0084227773.png
The user
root is not assigned to a correct group.
Solution
Change the ID of the group to which the user root user assigns to 0 and reinstall OMS.