Options param required

src/Compose/Field2Bt3.php

@@ -461,6 +461,10 @@ class Field2Bt3
     {
         $render = '';
 
+        if (is_null($this->options)) {
+            throw new \InvalidArgumentException("The `options` key is required in arguments field");
+        }
+
         if (!array_key_exists('source', $this->options)) {
             throw new \InvalidArgumentException("The `source` key is required in options");
         }

src/Compose/Field2Bt4.php

@@ -461,6 +461,10 @@ class Field2Bt4
     {
         $render = '';
 
+        if (is_null($this->options)) {
+            throw new \InvalidArgumentException("The `options` key is required in arguments field");
+        }
+
         if (!array_key_exists('source', $this->options)) {
             throw new \InvalidArgumentException("The `source` key is required in options");
         }