Hello Toofiq,
I’m afraid that response does not address the issue at hand.
For clarity, here is the current situation and what is needed to move forward:
The Helix Framework plugin is installed, enabled, and updated to the latest version.
The site has been migrated from Joomla 3 (latest) to Joomla 4 (latest) and then to Joomla 5 (latest). SP Page Builder has been used throughout and updated to the latest compatible version for each Joomla release.
All SP Page Builder pages function correctly until the Federal template is enabled.
When the Federal template is enabled, some SP Page Builder pages stop working, and at least one page (the homepage) reports the error described above. The break of those pages stops if i return to deafult Joomla template Cassiopia
Please provide guidance on how to resolve this issue.