Hello Payal,
We appreciate you reporting to us.
To solve the above, please ensure first that a file by the name 'ReportMan.ocx' is there in the location '….AttendHRM\BIn' (i.e inside the Lenvica HRMS installation folder there is folder called Bin, you should check for ReportMan.ocx inside that folder)
Open Command Prompt, change the directory to "….AttendHRM\Bin" and run the below commands in order:
regsvr32 -u reportman.ocx
regsvr32 reportman.ocx
Please refer the attached image of command prompt screenshots with the commands you should run.
I hope the above solves it for you.