diff --git a/README.md b/README.md
index 3836a7b..7490899 100644
--- a/README.md
+++ b/README.md
@@ -242,7 +242,7 @@ import (
 	"fmt"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
+	"github.com/PxyUp/fitter/pkg/builder"
 	pl "github.com/PxyUp/fitter/pkg/plugins/plugin"
 )
 
diff --git a/cmd/fitter/main.go b/cmd/fitter/main.go
index 8bcf55a..b256a16 100644
--- a/cmd/fitter/main.go
+++ b/cmd/fitter/main.go
@@ -31,6 +31,11 @@ func getConfig(filePath string) *config.Config {
 			return nil
 		}
 
+		if len(cfg.Items) == 0 {
+			log.Fatal("empty config")
+			return nil
+		}
+
 		return cfg
 	}
 
diff --git a/examples/plugin/README.md b/examples/plugin/README.md
index ba930e9..3442882 100644
--- a/examples/plugin/README.md
+++ b/examples/plugin/README.md
@@ -33,7 +33,7 @@ import (
 	"fmt"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
+	"github.com/PxyUp/fitter/pkg/builder"
 	pl "github.com/PxyUp/fitter/pkg/plugins/plugin"
 )
 
diff --git a/examples/plugin/connector/connector.go b/examples/plugin/connector/connector.go
index 1e36988..dbc4bb3 100644
--- a/examples/plugin/connector/connector.go
+++ b/examples/plugin/connector/connector.go
@@ -3,9 +3,9 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+	"github.com/PxyUp/fitter/pkg/builder"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	pl "github.com/PxyUp/fitter/pkg/plugins/plugin"
 )
 
diff --git a/examples/plugin/hardcoder/hardcoder.go b/examples/plugin/hardcoder/hardcoder.go
index fb0198f..9da9b46 100644
--- a/examples/plugin/hardcoder/hardcoder.go
+++ b/examples/plugin/hardcoder/hardcoder.go
@@ -3,9 +3,9 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+	builder "github.com/PxyUp/fitter/pkg/builder"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	pl "github.com/PxyUp/fitter/pkg/plugins/plugin"
 )
 
diff --git a/pkg/parser/builder/array.go b/pkg/builder/array.go
similarity index 100%
rename from pkg/parser/builder/array.go
rename to pkg/builder/array.go
diff --git a/pkg/parser/builder/bool.go b/pkg/builder/bool.go
similarity index 100%
rename from pkg/parser/builder/bool.go
rename to pkg/builder/bool.go
diff --git a/pkg/parser/builder/builder.go b/pkg/builder/builder.go
similarity index 100%
rename from pkg/parser/builder/builder.go
rename to pkg/builder/builder.go
diff --git a/pkg/parser/builder/float.go b/pkg/builder/float.go
similarity index 100%
rename from pkg/parser/builder/float.go
rename to pkg/builder/float.go
diff --git a/pkg/parser/builder/int.go b/pkg/builder/int.go
similarity index 100%
rename from pkg/parser/builder/int.go
rename to pkg/builder/int.go
diff --git a/pkg/parser/builder/null.go b/pkg/builder/null.go
similarity index 100%
rename from pkg/parser/builder/null.go
rename to pkg/builder/null.go
diff --git a/pkg/parser/builder/object.go b/pkg/builder/object.go
similarity index 100%
rename from pkg/parser/builder/object.go
rename to pkg/builder/object.go
diff --git a/pkg/parser/builder/pure_string.go b/pkg/builder/pure_string.go
similarity index 100%
rename from pkg/parser/builder/pure_string.go
rename to pkg/builder/pure_string.go
diff --git a/pkg/parser/builder/static.go b/pkg/builder/static.go
similarity index 100%
rename from pkg/parser/builder/static.go
rename to pkg/builder/static.go
diff --git a/pkg/parser/builder/string.go b/pkg/builder/string.go
similarity index 100%
rename from pkg/parser/builder/string.go
rename to pkg/builder/string.go
diff --git a/pkg/parser/builder/uuid.go b/pkg/builder/uuid.go
similarity index 100%
rename from pkg/parser/builder/uuid.go
rename to pkg/builder/uuid.go
diff --git a/pkg/connectors/browser.go b/pkg/connectors/browser.go
index b17b0b7..37008f5 100644
--- a/pkg/connectors/browser.go
+++ b/pkg/connectors/browser.go
@@ -1,9 +1,9 @@
 package connectors
 
 import (
+	"github.com/PxyUp/fitter/pkg/builder"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	"github.com/PxyUp/fitter/pkg/utils"
 )
 
diff --git a/pkg/connectors/connectors.go b/pkg/connectors/connectors.go
index fb23757..151065a 100644
--- a/pkg/connectors/connectors.go
+++ b/pkg/connectors/connectors.go
@@ -2,7 +2,7 @@ package connectors
 
 import (
 	"errors"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
+	"github.com/PxyUp/fitter/pkg/builder"
 )
 
 var (
diff --git a/pkg/connectors/server.go b/pkg/connectors/server.go
index 222c5cd..578ab74 100644
--- a/pkg/connectors/server.go
+++ b/pkg/connectors/server.go
@@ -3,11 +3,11 @@ package connectors
 import (
 	"bytes"
 	"context"
+	"github.com/PxyUp/fitter/pkg/builder"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/connectors/limitter"
 	"github.com/PxyUp/fitter/pkg/http_client"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	"github.com/PxyUp/fitter/pkg/utils"
 	"golang.org/x/sync/semaphore"
 	"io"
diff --git a/pkg/connectors/static.go b/pkg/connectors/static.go
index b50fa28..ae54b09 100644
--- a/pkg/connectors/static.go
+++ b/pkg/connectors/static.go
@@ -1,9 +1,9 @@
 package connectors
 
 import (
+	"github.com/PxyUp/fitter/pkg/builder"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	"github.com/PxyUp/fitter/pkg/utils"
 )
 
diff --git a/pkg/notifier/notifier.go b/pkg/notifier/notifier.go
index 0fa1bd0..6803817 100644
--- a/pkg/notifier/notifier.go
+++ b/pkg/notifier/notifier.go
@@ -2,9 +2,9 @@ package notifier
 
 import (
 	"fmt"
+	"github.com/PxyUp/fitter/pkg/builder"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/parser"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	"strconv"
 )
 
diff --git a/pkg/parser/expression.go b/pkg/parser/expression.go
index a6f1284..85bf430 100644
--- a/pkg/parser/expression.go
+++ b/pkg/parser/expression.go
@@ -1,7 +1,7 @@
 package parser
 
 import (
-	"github.com/PxyUp/fitter/pkg/parser/builder"
+	"github.com/PxyUp/fitter/pkg/builder"
 	"github.com/antonmedv/expr"
 )
 
diff --git a/pkg/parser/file.go b/pkg/parser/file.go
index e23fbcf..b52e440 100644
--- a/pkg/parser/file.go
+++ b/pkg/parser/file.go
@@ -2,11 +2,11 @@ package parser
 
 import (
 	"errors"
+	"github.com/PxyUp/fitter/pkg/builder"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/connectors"
 	"github.com/PxyUp/fitter/pkg/http_client"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	"github.com/PxyUp/fitter/pkg/utils"
 	"mime"
 	"net/url"
diff --git a/pkg/parser/html.go b/pkg/parser/html.go
index bb27d08..d5b34b2 100644
--- a/pkg/parser/html.go
+++ b/pkg/parser/html.go
@@ -2,13 +2,13 @@ package parser
 
 import (
 	"bytes"
+	builder "github.com/PxyUp/fitter/pkg/builder"
 	"strconv"
 	"sync"
 
 	"github.com/PuerkitoBio/goquery"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 )
 
 type htmlParser struct {
diff --git a/pkg/parser/json.go b/pkg/parser/json.go
index 921fbaf..bfdb430 100644
--- a/pkg/parser/json.go
+++ b/pkg/parser/json.go
@@ -1,11 +1,11 @@
 package parser
 
 import (
+	builder "github.com/PxyUp/fitter/pkg/builder"
 	"sync"
 
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	"github.com/tidwall/gjson"
 )
 
diff --git a/pkg/parser/parser.go b/pkg/parser/parser.go
index d12c91c..5e2baae 100644
--- a/pkg/parser/parser.go
+++ b/pkg/parser/parser.go
@@ -2,10 +2,10 @@ package parser
 
 import (
 	"fmt"
+	"github.com/PxyUp/fitter/pkg/builder"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/connectors"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	"github.com/PxyUp/fitter/pkg/plugins/store"
 	"github.com/PxyUp/fitter/pkg/utils"
 	"github.com/tidwall/gjson"
diff --git a/pkg/parser/xpath.go b/pkg/parser/xpath.go
index 3e916fc..de28151 100644
--- a/pkg/parser/xpath.go
+++ b/pkg/parser/xpath.go
@@ -2,12 +2,12 @@ package parser
 
 import (
 	"bytes"
+	"github.com/PxyUp/fitter/pkg/builder"
 	"strconv"
 	"sync"
 
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	"github.com/antchfx/htmlquery"
 	"golang.org/x/net/html"
 )
diff --git a/pkg/plugins/plugin/plugin.go b/pkg/plugins/plugin/plugin.go
index a5f8aa2..e6badb8 100644
--- a/pkg/plugins/plugin/plugin.go
+++ b/pkg/plugins/plugin/plugin.go
@@ -1,10 +1,10 @@
 package plugin
 
 import (
+	"github.com/PxyUp/fitter/pkg/builder"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/connectors"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 )
 
 type FieldPlugin interface {
diff --git a/pkg/plugins/store/store.go b/pkg/plugins/store/store.go
index e84d4cb..8e394ca 100644
--- a/pkg/plugins/store/store.go
+++ b/pkg/plugins/store/store.go
@@ -2,9 +2,9 @@ package store
 
 import (
 	"fmt"
+	builder "github.com/PxyUp/fitter/pkg/builder"
 	"github.com/PxyUp/fitter/pkg/config"
 	"github.com/PxyUp/fitter/pkg/logger"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
 	"github.com/PxyUp/fitter/pkg/plugins/plugin"
 	"os"
 	"path"
diff --git a/pkg/utils/formatter.go b/pkg/utils/formatter.go
index 8e781fd..c84460b 100644
--- a/pkg/utils/formatter.go
+++ b/pkg/utils/formatter.go
@@ -2,7 +2,7 @@ package utils
 
 import (
 	"fmt"
-	"github.com/PxyUp/fitter/pkg/parser/builder"
+	builder "github.com/PxyUp/fitter/pkg/builder"
 	"github.com/tidwall/gjson"
 	"strings"
 )