Question:Unable to access Plesk after upgrade: Array and string offset access syntax with curly braces is no longer supported
Symptoms
- Unable to access Plesk GUI with the error:
Array and string offset access syntax with curly braces is no longer supported (lessc.inc.php:717)
- Plesk was recently upgraded to 18.0.50 version.
- The Auto-update feature is disabled from Extensions>Updates.
Cause
The version of the Skins and Color Schemes extension is outdated.
Resolution
- Log into the server via RDP.
- Start a command prompt as an Administrator.
- Execute the command below to update the Skins and Color Schemes extension:
c:\>plesk bin extension --install heavy-metal-skin