replace fmt.sprintf (#12776)

* replace fmt.sprintf

* update error message

* Update app/ldap.go

Co-Authored-By: Jesse Hallam <jesse.hallam@gmail.com>

* Update app/ldap.go

Co-Authored-By: Jesse Hallam <jesse.hallam@gmail.com>

app/ldap.go

@@ -52,7 +52,7 @@ func (a *App) GetLdapGroup(ldapGroupID string) (*model.Group, *model.AppError) {
 		}
 	} else {
 		ae := model.NewAppError("GetLdapGroup", "ent.ldap.app_error", nil, "", http.StatusNotImplemented)
-		mlog.Error(fmt.Sprintf("%v", ae.Error()))
+		mlog.Error("Unable to use ldap", mlog.String("ldap_group_id", ldapGroupID), mlog.Err(ae))
 		return nil, ae
 	}
 
@@ -73,7 +73,7 @@ func (a *App) GetAllLdapGroupsPage(page int, perPage int, opts model.LdapGroupSe
 		}
 	} else {
 		ae := model.NewAppError("GetAllLdapGroupsPage", "ent.ldap.app_error", nil, "", http.StatusNotImplemented)
-		mlog.Error(fmt.Sprintf("%v", ae.Error()))
+		mlog.Error("Unable to use ldap", mlog.Err(ae))
 		return nil, 0, ae
 	}