Update group_rank.go

route/group_power_r/group_rank.go

@@ -198,7 +198,7 @@ func GroupPowerGradeDetail(c *gin.Context) (*mycontext.MyContext, error) {
 	grade := gradeM[groupPowerId]
 	nextExp := mysql.Num(0)
 	if grade.Grade != groupPower_e.GroupPowerGradeMax {
-		nextExp = groupPower_e.GroupPowerGradeExp[grade.Grade+1] - groupPower_e.GroupPowerGradeExp[grade.Grade]
+		nextExp = groupPower_e.GroupPowerGradeExp[grade.Grade+1]
 	}
 	expireAt := ""
 	if grade.ExpireAt.After(time.Now()) {