There are some issues when you try to build switchyOmega since this repo maintainer seems to be not have much time on solving issues there.

First, I went to https://github.com/FelisCatus/SwitchyOmega/releases and clicked https://github.com/FelisCatus/SwitchyOmega/archive/refs/tags/v2.5.20.zip

Then I read the README.md and see the ## Building the project there. I read it and when I run npm run deps, I got this error:

bower angular-spectrum-colorpicker#~1.3.5      ECMDERR Failed to execute "git ls-remote --tags --heads https://github.com/Jimdo/angular-spectrum-colorpicker.git", exit code of #128 fatal: unable to access 'https://github.com/Jimdo/angular-spectrum-colorpicker.git/': LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to github.com:443

Additional error details:
fatal: unable to access 'https://github.com/Jimdo/angular-spectrum-colorpicker.git/': LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to github.com:443

To fix it, just vim omega-web/bower.json, change the line angular-spectrum-colorpicker to "angular-spectrum-colorpicker": "https://github.com/screeps/angular-spectrum-colorpicker.git".

Other issues are network issues. Just change your proxy of command line console would solve them.

Run:

pip3 install requests
pip3 install PySocks
python3

then run:

import requests
socks5 = "socks5://198.1.1.1:9999"
proxy = dict(http=socks5, https=socks5)
res = requests.get('https://google.com', timeout=5, proxies=proxy)
res.content

Got error:

MaxRetryError: SOCKSHTTPSConnectionPool(host='google.com', port=443): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.contrib.socks.SOCKSHTTPSConnection object at 0x108a61810>: Failed to establish a new connection: SOCKS5 proxy server sent invalid data'))

This is also a network issue (The same as the curl example. You can switch to another WIFI connection.)