I am having trouble in publishing a hosted feature service from ArcMap 10.2 to ArcGIS Portal. When I attempt to publish, I suddenly started getting this error message. Previously it was working fine.

Log report on server. The warning and severe cases on 2019-09-12 at 09:41 are related to above publishing error.

I have Tested all below methods and still not got any solution:
Restart Publishing tool on server manager
validate Datastore – Its working perfectly fine
Publish mxd with different names
Tried Publishing layer, feature class, .shp
Tried Publishing Zip file of shp, directly on portal by using add item.
Windows authentication enable on IIS for server web adaptor
Restart services on task manager
Server drives have sufficient space
Has anyone run into this issue and how can I resolve it?
Thank you for any help or pointers in the right direction!