SQL Backup failed with Unable to load any of SMO managed DLL files

Hello,

I am getting below error when i try to do a SQL backup on Avamar,

2020-01-23 09:11:23 avsql Error <19498>: Unable to load any of SMO managed DLL files.
2020-01-23 09:11:23 avsql Error <15744>: Unable to load SMO managed DLL
2020-01-23 09:11:23 avsql Error <15760>: No targets after expansion!
2020-01-23 09:11:23 avsql Error <15760>: No targets after expansion!

Appreciate any help on this

Thanks and Regards,

Muhammed Basheer MP