fixed fileaccess error

src/util.cpp

@@ -226,6 +226,10 @@ void DiscordUtil::delete_tokens()
 ConfigFile DiscordUtil::get_tokens(String encryption_key)
 {
     ConfigFile config;
+    if (!FileAccess::file_exists("user://discord_data.binary"))
+    {
+        return ConfigFile();
+    }
     Error err = config.load_encrypted_pass("user://discord_data.binary", encryption_key);
     if (err != OK)
     {

src/util.h

@@ -9,6 +9,7 @@
 #include <godot_cpp/core/class_db.hpp>
 #include <godot_cpp/variant/utility_functions.hpp>
 #include <godot_cpp/classes/config_file.hpp>
+#include <godot_cpp/classes/file_access.hpp>
 
 using namespace godot;