XAMPP Windows, cannot load extension files

[electronum]

Trying to run with MediaWiki 1.35.3 in XAMPP (Windows 10), however extension files cannot be loaded, seems the path part extensions\Highlightjs_Integration is omitted(?).
Is there anything I can adjust?

Apache error.log:

[Thu Mar 16 12:10:53.189761 2023] [php:warn] [pid 10668:tid 1916] [client ::1:56357] PHP Warning:  md5_file(C:\\xampp\\htdocs\\wiki/highlight/highlight.min.js): Failed to open stream: No such file or directory in C:\\xampp\\htdocs\\wiki\\includes\\OutputPage.php on line 3993, referer: http://localhost/wiki/Template:Code_block?debug=true
[Thu Mar 16 12:10:53.189761 2023] [php:warn] [pid 10668:tid 1916] [client ::1:56357] PHP Warning:  OutputPage::transformFilePath: Failed to hash C:\\xampp\\htdocs\\wiki/highlight/highlight.min.js [Called from OutputPage::transformFilePath in C:\\xampp\\htdocs\\wiki\\includes\\OutputPage.php at line 3995] in C:\\xampp\\htdocs\\wiki\\includes\\debug\\MWDebug.php on line 430, referer: http://localhost/wiki/Template:Code_block?debug=true
[Thu Mar 16 12:10:53.190758 2023] [php:warn] [pid 10668:tid 1916] [client ::1:56357] PHP Warning:  md5_file(C:\\xampp\\htdocs\\wiki/init.js): Failed to open stream: No such file or directory in C:\\xampp\\htdocs\\wiki\\includes\\OutputPage.php on line 3993, referer: http://localhost/wiki/Template:Code_block?debug=true
[Thu Mar 16 12:10:53.190758 2023] [php:warn] [pid 10668:tid 1916] [client ::1:56357] PHP Warning:  OutputPage::transformFilePath: Failed to hash C:\\xampp\\htdocs\\wiki/init.js [Called from OutputPage::transformFilePath in C:\\xampp\\htdocs\\wiki\\includes\\OutputPage.php at line 3995] in C:\\xampp\\htdocs\\wiki\\includes\\debug\\MWDebug.php on line 430, referer: http://localhost/wiki/Template:Code_block?debug=true
[Thu Mar 16 12:10:53.192769 2023] [php:warn] [pid 10668:tid 1916] [client ::1:56357] PHP Warning:  md5_file(C:\\xampp\\htdocs\\wiki/custom.css): Failed to open stream: No such file or directory in C:\\xampp\\htdocs\\wiki\\includes\\OutputPage.php on line 3993, referer: http://localhost/wiki/Template:Code_block?debug=true
[Thu Mar 16 12:10:53.192769 2023] [php:warn] [pid 10668:tid 1916] [client ::1:56357] PHP Warning:  OutputPage::transformFilePath: Failed to hash C:\\xampp\\htdocs\\wiki/custom.css [Called from OutputPage::transformFilePath in C:\\xampp\\htdocs\\wiki\\includes\\OutputPage.php at line 3995] in C:\\xampp\\htdocs\\wiki\\includes\\debug\\MWDebug.php on line 430, referer: http://localhost/wiki/Template:Code_block?debug=true
[Thu Mar 16 12:10:53.192769 2023] [php:warn] [pid 10668:tid 1916] [client ::1:56357] PHP Warning:  md5_file(C:\\xampp\\htdocs\\wiki/highlight/styles/vs2015.min.css): Failed to open stream: No such file or directory in C:\\xampp\\htdocs\\wiki\\includes\\OutputPage.php on line 3993, referer: http://localhost/wiki/Template:Code_block?debug=true
[Thu Mar 16 12:10:53.192769 2023] [php:warn] [pid 10668:tid 1916] [client ::1:56357] PHP Warning:  OutputPage::transformFilePath: Failed to hash C:\\xampp\\htdocs\\wiki/highlight/styles/vs2015.min.css [Called from OutputPage::transformFilePath in C:\\xampp\\htdocs\\wiki\\includes\\OutputPage.php at line 3995] in C:\\xampp\\htdocs\\wiki\\includes\\debug\\MWDebug.php on line 430, referer: http://localhost/wiki/Template:Code_block?debug=true

[Nicolas01]

Hello,
I am surprised to see the following path in your error.log file: C:\\xampp\\htdocs\\wiki/highlight/highlight.min.js
I would have expected something like: C:\\xampp\\htdocs\\wiki\\extensions\\Highlightjs_Integration\\highlight\\highlight.min.js
So could you first check you have well downloaded and copied the Highlightjs_Integration folder to the following path C:\\xampp\\htdocs\\wiki\\extensions?