On installing October CMS, I ran into an error in which the installation just failed on “Building configuration files“, with an Progress failed notification telling me to check the install.log.
Install.log only revealed that the installation failed at “Install step: setupConfig“, which didn’t really tell me anything I didn’t know. Unsure of even what to Google.
Using PHP 8.0.2 via xampp 8.0.2.
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Answer
Solution from the helpful users on the OctoberCMS Discord:
October CMS doesn’t seem to be compatible with this PHP 8.0.2. If you have recently updated PHP, scale back down to 7.4.15.
The installation finally worked for me when I uninstalled & installed back down to PHP 7.4.15 (xampp 7.4.15).