Web Server is down

[scratchlass]

APIError: An Unexpected Error has occured. Please submit an issue on GitHub detailing this event.
at Solver.pollResponse (/home/gemweb/gemweb/src/gwrobots/node_modules/2captcha-ts/dist/structs/2captcha.js:117:19)
at processTicksAndRejections (node:internal/process/task_queues:96:5)
at async RobotCommands.solveCaptchaV3 (/home/gemweb/gemweb/src/gwrobots/src/Robots/Application/commands/RobotCommands.js:1460:9)
at async RobotIberdrolaInvoice.loginAttempt (/home/gemweb/gemweb/src/gwrobots/src/Robots/Infrastructure/Robots/Iberdrola/Iberdrola.js:68:35)
at async RobotIberdrolaInvoice.login (/home/gemweb/gemweb/src/gwrobots/src/Robots/Infrastructure/Robots/Iberdrola/Iberdrola.js:33:13)
at async Service.execute (/home/gemweb/gemweb/src/gwrobots/services/robot_invoice_services/robotInvoice.service.js:46:17)
at async Service.balancerSimple (/home/gemweb/gemweb/src/gwrobots/services/hub.service.js:193:17) {
err: '\n' +
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'<title>2captcha.com | 521: Web server is down</title>\n' +
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'

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' Web server is down\n' +
' Error code 521\n' +
'

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'

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' Visit cloudflare.com for more information.\n' +
'

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2024-01-03 13:01:03 UTC

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' You\n' +
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' Browser\n' +
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' Working\n' +
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'\n' +
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' Madrid\n' +
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' Cloudflare\n' +
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' Working\n' +
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' 2captcha.com\n' +
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' Host\n' +
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' Error\n' +
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What happened?

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The web server is not returning a connection. As a result, the web page is not displaying.

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What can I do?

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If you are a visitor of this website:

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Please try again in a few minutes.

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If you are the owner of this website:

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Contact your hosting provider letting them know your web server is not responding. Additional troubleshooting information.

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' Cloudflare Ray ID: 83fb6d9f0d3a1ba1\n' +
' •\n' +
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' Your IP:\n' +
' Click to reveal\n' +
' 46.27.218.82\n' +
' •\n' +
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' Performance & security by Cloudflare\n' +
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'

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' <script>(function(){function d(){var b=a.getElementById("cf-footer-item-ip"),c=a.getElementById("cf-footer-ip-reveal");b&&"classList"in b&&(b.classList.remove("hidden"),c.addEventListener("click",function(){c.classList.add("hidden");a.getElementById("cf-footer-ip").classList.remove("hidden")}))}var a=document;document.addEventListener&&a.addEventListener("DOMContentLoaded",d)})();</script>\n' +
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code: 0
}