diff --git a/internal/module/module.go b/internal/module/module.go
index 4a82f59..730c84f 100644
--- a/internal/module/module.go
+++ b/internal/module/module.go
@@ -10,9 +10,9 @@ import (
 )
 
 type ModuleError struct {
-	Index  int
-	Config config.ModuleConfig
-	Error  error
+	Index  int                 `json:"index"`
+	Config config.ModuleConfig `json:"config"`
+	Error  string              `json:"error"`
 }
 
 type Module interface {
diff --git a/internal/route/route.go b/internal/route/route.go
index 351448d..cf6be43 100644
--- a/internal/route/route.go
+++ b/internal/route/route.go
@@ -13,9 +13,9 @@ import (
 )
 
 type RouteError struct {
-	Index  int
-	Config config.RouteConfig
-	Error  error
+	Index  int                `json:"index"`
+	Config config.RouteConfig `json:"config"`
+	Error  string             `json:"error"`
 }
 type Route struct {
 	input      string
diff --git a/router.go b/router.go
index a12e19e..a7e247c 100644
--- a/router.go
+++ b/router.go
@@ -131,7 +131,7 @@ func NewRouter(config config.Config) (*Router, []module.ModuleError, []route.Rou
 			moduleErrors = append(moduleErrors, module.ModuleError{
 				Index:  moduleIndex,
 				Config: moduleDecl,
-				Error:  err,
+				Error:  err.Error(),
 			})
 			continue
 		}
@@ -148,7 +148,7 @@ func NewRouter(config config.Config) (*Router, []module.ModuleError, []route.Rou
 			routeErrors = append(routeErrors, route.RouteError{
 				Index:  routeIndex,
 				Config: routeDecl,
-				Error:  err,
+				Error:  err.Error(),
 			})
 			continue
 		}
diff --git a/router_test.go b/router_test.go
index 441e03c..2359245 100644
--- a/router_test.go
+++ b/router_test.go
@@ -149,8 +149,8 @@ func TestNewRouterDuplicateModuleId(t *testing.T) {
 		t.Fatalf("router should have returned exactly 1 module error, got: %d", len(moduleErrors))
 	}
 
-	if moduleErrors[0].Error.Error() != "module id already exists" {
-		t.Fatalf("module error did not match expected, got: %s", moduleErrors[0].Error.Error())
+	if moduleErrors[0].Error != "module id already exists" {
+		t.Fatalf("module error did not match expected, got: %s", moduleErrors[0].Error)
 	}
 }
 
@@ -184,8 +184,8 @@ func TestNewRouterRouteWithUnknwonProcessor(t *testing.T) {
 		t.Fatalf("router should have returned exactly 1 route error, got: %d", len(routeErrors))
 	}
 
-	if routeErrors[0].Error.Error() != "problem loading processor registration for processor type: asdfasdf" {
-		t.Fatalf("route error did not match expected, got: %s", routeErrors[0].Error.Error())
+	if routeErrors[0].Error != "problem loading processor registration for processor type: asdfasdf" {
+		t.Fatalf("route error did not match expected, got: %s", routeErrors[0].Error)
 	}
 }