Version number error in Web Client

Version number error in Web Client

Hello,
While accessing the SCADA from Web Client it shows the following error:
"File 'templates.cmp' has version number 7.50 SP0-butthe project has version number 5.21 SP2!"
Kindly suggest a solution.

This is a migrated post! Originally posted on 06.02.2018 by user joelprasad. Please be aware that information can be outdated.