Hello Imran
In order to find what is the cause of this issue, we need to analyze the following:
Was the switch providing POE correctly before or is this new implementation?
Is the output "show inline power" the one not showing anything?
Have you tried the command "show inline power detail" , what do you see in it? (POE firmware version has like different numbers or 0.0.0.0 build 0, or see anything like Hardware version UNKNOWN) ?
What Software image version is the switch running?
Have you tried to disable and re enable power in the interfaces?
If you see those errors and if upgrade to the latest version for example 8070c, does not fix the problem please open a new ticket.
Regards.