update on psosale string 1 bugs

app/Helpers/HasUploader.php

@@ -10,6 +10,11 @@ trait HasUploader
     private function upload(Request $request, $input, $oldFile = null, $disk = null)
     {
         $file = $request->file($input);
+
+        if (!$file) {
+            return $oldFile;
+        }
+
         $ext = $file->getClientOriginalExtension();
         $filename = now()->timestamp . '-' . rand(1, 1000) . '.' . $ext;
 
@@ -29,6 +34,11 @@ private function upload(Request $request, $input, $oldFile = null, $disk = null)
     private function uploadWithFileName(Request $request, $input, $oldFile = null, $disk = null)
     {
         $file = $request->file($input);
+
+        if (!$file) {
+            return $oldFile;
+        }
+
         $filename = $file->getClientOriginalName();
 
         $path = 'files/';
@@ -47,8 +57,13 @@ private function uploadWithFileName(Request $request, $input, $oldFile = null, $
     private function multipleUpload(Request $request, $input, $oldFiles = [], $disk = null)
     {
         $uploadedFiles = [];
+        $files = $request->file($input);
 
-        foreach ($request->file($input) as $file) {
+        if (!$files) {
+            return $uploadedFiles;
+        }
+
+        foreach ($files as $file) {
             $ext = $file->getClientOriginalExtension();
             $filename = now()->timestamp . '_' . uniqid() . '.' . $ext;