Fano web application used Free Pascal 3.0.4 TFpHttpServer returns empty response with incorrect Content-Type

[zamronypj]

Fano web application that use Free Pascal 3.0.4 TFpHttpServer returns empty response with incorrect Content-Type when compiled with FPC 3.0.4

How to reproduce

• Install FPC 3.0.4
• Create http project with latest Fano CLI

$ fanocli --project-http=myproject
$ cd myproject && fanocli --controller=Home --route=/ 
$ ./build.sh
$ ./bin/app.cgi

• It will run http application in port 20477
• Open http://127.0.0.1:20477 in browser. Browser downloads response.

[zamronypj]

Fixed in 076846e

[zamronypj]

This issue is caused by different behavior of FileExists() in FPC 3.0.4 and FPC 3.2.0. Prior to FPC 3.2.0, In Unix/Linux, FileExists() returns true for both for existing file and directory. In FPC 3.2.0, FileExists() returns false if input name is existing directory.