Fix lint errors

Author: deanhuynh

internal/provider/destination_subscription_resource.go

@@ -163,6 +163,7 @@ func (r *destinationSubscriptionResource) Create(ctx context.Context, req resour
 	reverseETLSchedule, diags := getSchedule(ctx, plan.ReverseETLSchedule)
 	if diags.HasError() {
 		resp.Diagnostics.Append(diags...)
+
 		return
 	}
 
@@ -292,6 +293,7 @@ func (r *destinationSubscriptionResource) Update(ctx context.Context, req resour
 	reverseETLSchedule, diags := getSchedule(ctx, plan.ReverseETLSchedule)
 	if diags.HasError() {
 		resp.Diagnostics.Append(diags...)
+
 		return
 	}
 

internal/provider/models/destination_subscription.go

@@ -1,6 +1,8 @@
 package models
 
 import (
+	"fmt"
+
 	"github.com/hashicorp/terraform-plugin-framework-jsontypes/jsontypes"
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/segmentio/public-api-sdk-go/api"
@@ -72,7 +74,7 @@ func getReverseETLSchedule(schedule *api.ReverseEtlScheduleDefinition) (*Reverse
 	if schedule.Config.IsSet() {
 		byteConfig, err := schedule.Config.MarshalJSON()
 		if err != nil {
-			return nil, err
+			return nil, fmt.Errorf("failed to marshal reverse ETL schedule config: %w", err)
 		}
 		stringConfig := string(byteConfig)
 

internal/provider/reverse_etl_model_resource.go

@@ -99,10 +99,12 @@ func (r *reverseETLModelResource) Create(ctx context.Context, req resource.Creat
 	}
 
 	var scheduleConfig map[string]interface{}
-	diags = plan.ScheduleConfig.Unmarshal(&scheduleConfig)
-	resp.Diagnostics.Append(diags...)
-	if resp.Diagnostics.HasError() {
-		return
+	if !plan.ScheduleConfig.IsNull() && !plan.ScheduleConfig.IsUnknown() {
+		diags = plan.ScheduleConfig.Unmarshal(&scheduleConfig)
+		resp.Diagnostics.Append(diags...)
+		if resp.Diagnostics.HasError() {
+			return
+		}
 	}
 
 	out, body, err := r.client.ReverseETLAPI.CreateReverseEtlModel(r.authContext).CreateReverseEtlModelInput(api.CreateReverseEtlModelInput{