CodeInigter 4 - 403 Forbidden

Recommend you to read this and follow instructions there: https://codeigniter4.github.io/userguide...index.html

It will not work if you just download it, unpack and rename. Probably, you should at least run webserver (built in spark, or external one like Apache). Please read this: https://codeigniter4.github.io/userguide...nning.html

Otherwise it is not possible to help you, because in your question you do not give any hint anout your system: Windows, Linux or Mac, local or cloud, what is your webserver and PHP version (if installed at all), etc.