diff --git a/plugins/woocommerce/changelog/fix-50283-fatal-shipping-methods b/plugins/woocommerce/changelog/fix-50283-fatal-shipping-methods
new file mode 100644
index 00000000000..29b082fe269
--- /dev/null
+++ b/plugins/woocommerce/changelog/fix-50283-fatal-shipping-methods
@@ -0,0 +1,4 @@
+Significance: patch
+Type: fix
+
+Ensure session object is initialized before attempting to get chosen shipping methods
diff --git a/plugins/woocommerce/includes/wc-cart-functions.php b/plugins/woocommerce/includes/wc-cart-functions.php
index e93db769c2a..d0a048d3bbb 100644
--- a/plugins/woocommerce/includes/wc-cart-functions.php
+++ b/plugins/woocommerce/includes/wc-cart-functions.php
@@ -413,7 +413,12 @@ function wc_cart_round_discount( $value, $precision ) {
  */
 function wc_get_chosen_shipping_method_ids() {
 	$method_ids     = array();
-	$chosen_methods = WC()->session->get( 'chosen_shipping_methods', array() );
+	$chosen_methods = array();
+
+	if ( is_callable( array( WC()->session, 'get' ) ) ) {
+		$chosen_methods = WC()->session->get( 'chosen_shipping_methods', array() );
+	}
+
 	foreach ( $chosen_methods as $chosen_method ) {
 		if ( ! is_string( $chosen_method ) ) {
 			continue;
@@ -421,6 +426,7 @@ function wc_get_chosen_shipping_method_ids() {
 		$chosen_method = explode( ':', $chosen_method );
 		$method_ids[]  = current( $chosen_method );
 	}
+
 	return $method_ids;
 }