During the quickstart installation process, I receive this error:
The installation process failed.
Installation progress is approximately 90%.
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<b>Warning</b>: simplexml_load_file(): I/O warning : failed to load external entity "/home/mhd-01/www.sitename.org/htdocs/plugins/system/TmplHelixUltimate/TmplHelixUltimate.xml" in <b>/home/mhd-01/www.sitename.org/htdocs/libraries/src/Installer/Installer.php</b> on line <b>2080</b><br />
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<b>Warning</b>: Trying to access array offset on value of type bool in <b>/home/mhd-01/www.sitename.org/htdocs/libraries/src/Installer/Adapter/PluginAdapter.php</b> on line <b>617</b><br />
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<b>Warning</b>: Trying to access array offset on value of type bool in <b>/home/mhd-01/www.sitename.org/htdocs/libraries/src/Installer/Adapter/PluginAdapter.php</b> on line <b>618</b><br />
{"token":"42a89bf3c0988c392b33df32e4a7cae0","lang":"it-IT","message":null,"messages":null,"error":false,"header":null,"data":{"view":"remove"}}