diff --git a/src/Exporters/Abstract/AbstractConverter.php b/src/Exporters/Abstract/AbstractConverter.php
index b5c15c2..8115ea8 100644
--- a/src/Exporters/Abstract/AbstractConverter.php
+++ b/src/Exporters/Abstract/AbstractConverter.php
@@ -173,7 +173,7 @@ abstract class AbstractConverter implements ConverterContract
      */
     protected function interpolate(string $content): string
     {
-        if (empty($this->vars) && $this->env->hasVars()) {
+        if (empty($this->vars) && !empty($this->env) && $this->env->hasVars()) {
             return $content;
         }
         $matches = [];
diff --git a/src/Processor.php b/src/Processor.php
index e4c251e..9bb8cb2 100644
--- a/src/Processor.php
+++ b/src/Processor.php
@@ -22,7 +22,7 @@ class Processor
     /**
      * Converter version
      */
-    public const VERSION = '1.2.2';
+    public const VERSION = '1.2.3';
 
     /**
      * @var string[] Paths to collection files