Added configuration panel datasets, back-end refactor and others

app/Services/CsvReader.php

@@ -12,7 +12,7 @@ class CsvReader {
         public string $filename,
     )
     {
-        $this->file = fopen(public_path($filename), "r");
+        $this->file = fopen($filename, "r");
         if (!$this->file) {
             throw new \RuntimeException("Failed to open file: " . $filename);
         }