Php7.0-fpm and php5.6-fpm both running


recently i migrated to v3.8.1
and upgraded php5.6-fpm to php7.0-fpm
still both services running when i check with command ee stack status.
Do we need to remove php5.6 permentatly if show command to do.

my site is crashing many times like error in database connection any solution for it.