diff --git a/internal/bbsimctl/commands/completion.go b/internal/bbsimctl/commands/completion.go
index d7ad19f..27811f3 100644
--- a/internal/bbsimctl/commands/completion.go
+++ b/internal/bbsimctl/commands/completion.go
@@ -17,6 +17,7 @@
 
 import (
 	"fmt"
+
 	"github.com/jessevdk/go-flags"
 	"github.com/opencord/bbsim/internal/bbsimctl/completion"
 )
@@ -28,7 +29,7 @@
 }
 
 func RegisterCompletionCommands(parent *flags.Parser) {
-	parent.AddCommand("completion", "generate shell compleition", "Commands to generate shell completion information", &CompletionOptions{})
+	_, _ = parent.AddCommand("completion", "generate shell compleition", "Commands to generate shell completion information", &CompletionOptions{})
 }
 
 func (options *BashOptions) Execute(args []string) error {
diff --git a/internal/bbsimctl/commands/config.go b/internal/bbsimctl/commands/config.go
index b05bb5b..c3d8a14 100644
--- a/internal/bbsimctl/commands/config.go
+++ b/internal/bbsimctl/commands/config.go
@@ -19,6 +19,7 @@
 
 import (
 	"fmt"
+
 	"github.com/jessevdk/go-flags"
 	"github.com/opencord/bbsim/internal/bbsimctl/config"
 	"gopkg.in/yaml.v2"
@@ -45,7 +46,7 @@
 type ConfigOptions struct{}
 
 func RegisterConfigCommands(parent *flags.Parser) {
-	parent.AddCommand("config", "generate bbsimctl configuration", "Commands to generate bbsimctl configuration", &ConfigOptions{})
+	_, _ = parent.AddCommand("config", "generate bbsimctl configuration", "Commands to generate bbsimctl configuration", &ConfigOptions{})
 }
 
 func (options *ConfigOptions) Execute(args []string) error {
diff --git a/internal/bbsimctl/commands/handler.go b/internal/bbsimctl/commands/handler.go
index 3c4b0ff..6b05534 100644
--- a/internal/bbsimctl/commands/handler.go
+++ b/internal/bbsimctl/commands/handler.go
@@ -16,12 +16,13 @@
 package commands
 
 import (
+	"io"
+
 	"github.com/golang/protobuf/proto"
 	"github.com/jhump/protoreflect/desc"
 	"github.com/jhump/protoreflect/dynamic"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/status"
-	"io"
 )
 
 type RpcEventHandler struct {
@@ -64,7 +65,10 @@
 	}
 
 	for k, v := range fields {
-		dmsg.TrySetFieldByName(k, v)
+		err := dmsg.TrySetFieldByName(k, v)
+		if err != nil {
+			return err
+		}
 	}
 	delete(h.Fields, dmsg.XXX_MessageName())
 
diff --git a/internal/bbsimctl/commands/logging.go b/internal/bbsimctl/commands/logging.go
index 42e4771..b9a66b7 100644
--- a/internal/bbsimctl/commands/logging.go
+++ b/internal/bbsimctl/commands/logging.go
@@ -19,6 +19,7 @@
 import (
 	"context"
 	"fmt"
+
 	"github.com/jessevdk/go-flags"
 	pb "github.com/opencord/bbsim/api/bbsim"
 	"github.com/opencord/bbsim/internal/bbsimctl/config"
@@ -34,7 +35,7 @@
 }
 
 func RegisterLoggingCommands(parent *flags.Parser) {
-	parent.AddCommand("log", "set bbsim log level", "Commands to set the log level", &LoggingOptions{})
+	_, _ = parent.AddCommand("log", "set bbsim log level", "Commands to set the log level", &LoggingOptions{})
 }
 
 func (options *LoggingOptions) Execute(args []string) error {
@@ -59,6 +60,10 @@
 
 	logLevel, err := c.SetLogLevel(ctx, &req)
 
+	if err != nil {
+		log.Fatalf("could not set log level: %v", err)
+	}
+
 	fmt.Println("New log settings:")
 	fmt.Println(fmt.Sprintf("\tLevel: %s", logLevel.Level))
 	fmt.Println(fmt.Sprintf("\tReportCaller: %t", logLevel.Caller))
diff --git a/internal/bbsimctl/commands/olt.go b/internal/bbsimctl/commands/olt.go
index a16edef..5f6747e 100644
--- a/internal/bbsimctl/commands/olt.go
+++ b/internal/bbsimctl/commands/olt.go
@@ -69,7 +69,7 @@
 }
 
 func RegisterOltCommands(parser *flags.Parser) {
-	parser.AddCommand("olt", "OLT Commands", "Commands to query and manipulate the OLT device", &oltOptions{})
+	_, _ = parser.AddCommand("olt", "OLT Commands", "Commands to query and manipulate the OLT device", &oltOptions{})
 }
 
 func getOLT() *pb.Olt {
@@ -103,7 +103,7 @@
 
 	// print out
 	tableFormat := format.Format(DEFAULT_OLT_DEVICE_HEADER_FORMAT)
-	tableFormat.Execute(os.Stdout, true, olt)
+	_ = tableFormat.Execute(os.Stdout, true, olt)
 
 	return nil
 }
@@ -114,7 +114,7 @@
 	printOltHeader("NNI Ports for", olt)
 
 	tableFormat := format.Format(DEFAULT_PORT_HEADER_FORMAT)
-	tableFormat.Execute(os.Stdout, true, olt.NNIPorts)
+	_ = tableFormat.Execute(os.Stdout, true, olt.NNIPorts)
 
 	return nil
 }
@@ -125,7 +125,7 @@
 	printOltHeader("PON Ports for", olt)
 
 	tableFormat := format.Format(DEFAULT_PORT_HEADER_FORMAT)
-	tableFormat.Execute(os.Stdout, true, olt.PONPorts)
+	_ = tableFormat.Execute(os.Stdout, true, olt.PONPorts)
 
 	return nil
 }
diff --git a/internal/bbsimctl/commands/onu.go b/internal/bbsimctl/commands/onu.go
index c331502..771df4c 100644
--- a/internal/bbsimctl/commands/onu.go
+++ b/internal/bbsimctl/commands/onu.go
@@ -109,7 +109,7 @@
 }
 
 func RegisterONUCommands(parser *flags.Parser) {
-	parser.AddCommand("onu", "ONU Commands", "Commands to query and manipulate ONU devices", &ONUOptions{})
+	_, _ = parser.AddCommand("onu", "ONU Commands", "Commands to query and manipulate ONU devices", &ONUOptions{})
 }
 
 func connect() (pb.BBSimClient, *grpc.ClientConn) {
diff --git a/internal/bbsimctl/commands/pon.go b/internal/bbsimctl/commands/pon.go
index 885fb75..332f748 100644
--- a/internal/bbsimctl/commands/pon.go
+++ b/internal/bbsimctl/commands/pon.go
@@ -45,7 +45,7 @@
 }
 
 func RegisterPonCommands(parser *flags.Parser) {
-	parser.AddCommand("pon", "PON Commands", "Commands to query and manipulate the PON port", &PONOptions{})
+	_, _ = parser.AddCommand("pon", "PON Commands", "Commands to query and manipulate the PON port", &PONOptions{})
 }
 
 func (pon *PonPoweronAllOnus) Execute(args []string) error {