Hi,
We apologize for the inconvenience.
Based on the information provided, this issue appears to be related to the LiteSpeed Cache plugin itself rather than Joomla, SP Page Builder, or Helix Ultimate. As this extension is developed and maintained by a third-party vendor, it falls outside our support scope.
We recommend contacting the LiteSpeed Cache plugin author or their support team directly so they can investigate and provide a fix or compatibility guidance for your specific setup (Joomla 5.4.1, PHP 8.3, etc.).
Thank you for your understanding.