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codyx avatar codyx commented on June 2, 2024 1 
2023-12-21T23:26:59.714575Z  WARN etherscanidentifier: could not get etherscan info: Serde(Error("expected value", line: 1, column: 1))

and

ERROR etherscan: Failed to deserialize response: expected value at line 1 column 1

I ran into a similar issue (see above), here's what I discovered:

  • When ETHERSCAN_API_KEY is set in the environment, forge will try resolving the etherscan API and fetch contracts info.
  • Even though the script being ran may not be broadcasting anything, is in offline mode and isn't being provided with the --verify flag, forge will still execute the previous step multiples times anyways.

TL;DR: unsetting ETHERSCAN_API_KEY when running local tests & scripts resolved my issue.

PS: the etherscan key must be commented out from the .env if using it, as unsetting the variable doesn't prevent forge from loading the environment file.

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maurelian avatar maurelian commented on June 2, 2024 1

TL;DR: unsetting ETHERSCAN_API_KEY when running local tests & scripts resolved my issue.

This worked for me, though (probably because I was running from a script?) unset ETHERSCAN_API_KEY was insufficient, and I needed export ETHERSCAN_API_KEY="".

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slordua avatar slordua commented on June 2, 2024 1

This worked for me, though (probably because I was running from a script?) unset ETHERSCAN_API_KEY was insufficient, and I needed export ETHERSCAN_API_KEY="".

this one works for me

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farmage avatar farmage commented on June 2, 2024 1

trying to compile Optimism L2 on Sepolia Testnet
getting the error even with
--verifier etherscan --etherscan-api-key ************************ --verifier-url https://api-sepolia.etherscan.io/api
The difference is in my case it returns Access Denied error
using the latest forge version
forge 0.2.0 (b320027 2024-01-12T00:17:44.209192793Z)
please advise

2024-01-12T08:47:44.050530Z ERROR etherscan: Failed to deserialize response: expected value at line 1 column 1 res="<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\" />\n<title>403 - Forbidden: Access is denied.</title>\n<style type=\"text/css\">\r\n<!--\r\nbody{margin:0;font-size:.7em;font-family:Verdana, Arial, Helvetica, sans-serif;background:#EEEEEE;}\r\nfieldset{padding:0 15px 10px 15px;} \r\nh1{font-size:2.4em;margin:0;color:#FFF;}\r\nh2{font-size:1.7em;margin:0;color:#CC0000;} \r\nh3{font-size:1.2em;margin:10px 0 0 0;color:#000000;} \r\n#header{width:96%;margin:0 0 0 0;padding:6px 2% 6px 2%;font-family:\"trebuchet MS\", Verdana, sans-serif;color:#FFF;\r\nbackground-color:#555555;}\r\n#content{margin:0 0 0 2%;position:relative;}\r\n.content-container{background:#FFF;width:96%;margin-top:8px;padding:10px;position:relative;}\r\n-->\r\n</style>\n</head>\n<body>\n<div id=\"header\"><h1>Server Error</h1></div>\n<div id=\"content\">\n<div class=\"content-container\"><fieldset>\n<h2>403 - Forbidden: Access is denied.</h2>\n<h3>You do not have permission to view this directory or page using the credentials that you supplied.</h3>\n</fieldset></div>\n</div>\n<script>(function(){var js = \"window['__CF$cv$params']={r:'844422eafa618ec2',t:'MTcwNTA0OTI2NC4wNDAwMDA='};_cpo=document.createElement('script');_cpo.nonce='',_cpo.src='/cdn-cgi/challenge-platform/scripts/jsd/main.js',document.getElementsByTagName('head')[0].appendChild(_cpo);\";var _0xh = document.createElement('iframe');_0xh.height = 1;_0xh.width = 1;_0xh.style.position = 'absolute';_0xh.style.top = 0;_0xh.style.left = 0;_0xh.style.border = 'none';_0xh.style.visibility = 'hidden';document.body.appendChild(_0xh);function handler() {var _0xi = _0xh.contentDocument || _0xh.contentWindow.document;if (_0xi) {var _0xj = _0xi.createElement('script');_0xj.innerHTML = js;_0xi.getElementsByTagName('head')[0].appendChild(_0xj);}}if (document.readyState !== 'loading') {handler();} else if (window.addEventListener) {document.addEventListener('DOMContentLoaded', handler);} else {var prev = document.onreadystatechange || function () {};document.onreadystatechange = function (e) {prev(e);if (document.readyState !== 'loading') {document.onreadystatechange = prev;handler();}};}})();</script></body>\n</html>\n"

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slordua avatar slordua commented on June 2, 2024

btw this is caused by this entry in foundry.toml

[etherscan]
sepolia = { key = "${ETHERSCAN_KEY}" }

don't have this issue when omitted

don't think anything is wrong with my config because there's no issue verifying contracts elsewhere

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mattsse avatar mattsse commented on June 2, 2024

mind sharing the etherscan api url?
this is either wrong API or a JS challenge for some reason, which doesn't really make sense for API URLs... but etherscan has these

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slordua avatar slordua commented on June 2, 2024

direct copy and paste

[rpc_endpoints]
mainnet = "${MAINNET_RPC_URL}"
sepolia = "${SEPOLIA_RPC_URL}"

[etherscan]
mainnet = { key = "${ETHERSCAN_API_KEY}", url = "https://api.etherscan.io/api" }
sepolia = { key = "${ETHERSCAN_API_KEY}", url = "https://api-sepolia.etherscan.io/api" }

and .env

MAINNET_RPC_URL="http://127.0.0.1:8545"
SEPOLIA_RPC_URL="http://127.0.0.1:8546"
ETHERSCAN_API_KEY="RR2Q7D9SP4ATYZENACMCSWC5QPXTTVH318"

if i use url = "https://api.sepolia.etherscan.io/api" i actually don't get the error, but this can't be correct right? additionally, it's not getting any of the traces it should when i remove all my vm.labels (that was my workaround)

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rocketman-21 avatar rocketman-21 commented on June 2, 2024

--verifier etherscan --verifier-url https://api-sepolia.etherscan.io/api\? adding to the end of my commands helped w/a similar issue

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slordua avatar slordua commented on June 2, 2024

tried passing that but i get invalid escape sequence

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codyx avatar codyx commented on June 2, 2024

TL;DR: unsetting ETHERSCAN_API_KEY when running local tests & scripts resolved my issue.

This worked for me, though (probably because I was running from a script?) unset ETHERSCAN_API_KEY was insufficient, and I needed export ETHERSCAN_API_KEY="".

Correct, I edited my message to add this precision as it was indeed not specified.

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codyx avatar codyx commented on June 2, 2024

trying to compile Optimism L2 on Sepolia Testnet getting the error even with --verifier etherscan --etherscan-api-key ************************ --verifier-url https://api-sepolia.etherscan.io/api The difference is in my case it returns Access Denied error using the latest forge version forge 0.2.0 (b320027 2024-01-12T00:17:44.209192793Z) please advise

2024-01-12T08:47:44.050530Z ERROR etherscan: Failed to deserialize response: expected value at line 1 column 1 res="<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\" />\n<title>403 - Forbidden: Access is denied.</title>\n<style type=\"text/css\">\r\n<!--\r\nbody{margin:0;font-size:.7em;font-family:Verdana, Arial, Helvetica, sans-serif;background:#EEEEEE;}\r\nfieldset{padding:0 15px 10px 15px;} \r\nh1{font-size:2.4em;margin:0;color:#FFF;}\r\nh2{font-size:1.7em;margin:0;color:#CC0000;} \r\nh3{font-size:1.2em;margin:10px 0 0 0;color:#000000;} \r\n#header{width:96%;margin:0 0 0 0;padding:6px 2% 6px 2%;font-family:\"trebuchet MS\", Verdana, sans-serif;color:#FFF;\r\nbackground-color:#555555;}\r\n#content{margin:0 0 0 2%;position:relative;}\r\n.content-container{background:#FFF;width:96%;margin-top:8px;padding:10px;position:relative;}\r\n-->\r\n</style>\n</head>\n<body>\n<div id=\"header\"><h1>Server Error</h1></div>\n<div id=\"content\">\n<div class=\"content-container\"><fieldset>\n<h2>403 - Forbidden: Access is denied.</h2>\n<h3>You do not have permission to view this directory or page using the credentials that you supplied.</h3>\n</fieldset></div>\n</div>\n<script>(function(){var js = \"window['__CF$cv$params']={r:'844422eafa618ec2',t:'MTcwNTA0OTI2NC4wNDAwMDA='};_cpo=document.createElement('script');_cpo.nonce='',_cpo.src='/cdn-cgi/challenge-platform/scripts/jsd/main.js',document.getElementsByTagName('head')[0].appendChild(_cpo);\";var _0xh = document.createElement('iframe');_0xh.height = 1;_0xh.width = 1;_0xh.style.position = 'absolute';_0xh.style.top = 0;_0xh.style.left = 0;_0xh.style.border = 'none';_0xh.style.visibility = 'hidden';document.body.appendChild(_0xh);function handler() {var _0xi = _0xh.contentDocument || _0xh.contentWindow.document;if (_0xi) {var _0xj = _0xi.createElement('script');_0xj.innerHTML = js;_0xi.getElementsByTagName('head')[0].appendChild(_0xj);}}if (document.readyState !== 'loading') {handler();} else if (window.addEventListener) {document.addEventListener('DOMContentLoaded', handler);} else {var prev = document.onreadystatechange || function () {};document.onreadystatechange = function (e) {prev(e);if (document.readyState !== 'loading') {document.onreadystatechange = prev;handler();}};}})();</script></body>\n</html>\n"

Yes it's probably related to the same error. That's also what I had (i.e., Access denied).

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drinkius avatar drinkius commented on June 2, 2024

trying to compile Optimism L2 on Sepolia Testnet getting the error even with --verifier etherscan --etherscan-api-key ************************ --verifier-url https://api-sepolia.etherscan.io/api The difference is in my case it returns Access Denied error using the latest forge version forge 0.2.0 (b320027 2024-01-12T00:17:44.209192793Z) please advise

2024-01-12T08:47:44.050530Z ERROR etherscan: Failed to deserialize response: expected value at line 1 column 1 res="<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\" />\n<title>403 - Forbidden: Access is denied.</title>\n<style type=\"text/css\">\r\n<!--\r\nbody{margin:0;font-size:.7em;font-family:Verdana, Arial, Helvetica, sans-serif;background:#EEEEEE;}\r\nfieldset{padding:0 15px 10px 15px;} \r\nh1{font-size:2.4em;margin:0;color:#FFF;}\r\nh2{font-size:1.7em;margin:0;color:#CC0000;} \r\nh3{font-size:1.2em;margin:10px 0 0 0;color:#000000;} \r\n#header{width:96%;margin:0 0 0 0;padding:6px 2% 6px 2%;font-family:\"trebuchet MS\", Verdana, sans-serif;color:#FFF;\r\nbackground-color:#555555;}\r\n#content{margin:0 0 0 2%;position:relative;}\r\n.content-container{background:#FFF;width:96%;margin-top:8px;padding:10px;position:relative;}\r\n-->\r\n</style>\n</head>\n<body>\n<div id=\"header\"><h1>Server Error</h1></div>\n<div id=\"content\">\n<div class=\"content-container\"><fieldset>\n<h2>403 - Forbidden: Access is denied.</h2>\n<h3>You do not have permission to view this directory or page using the credentials that you supplied.</h3>\n</fieldset></div>\n</div>\n<script>(function(){var js = \"window['__CF$cv$params']={r:'844422eafa618ec2',t:'MTcwNTA0OTI2NC4wNDAwMDA='};_cpo=document.createElement('script');_cpo.nonce='',_cpo.src='/cdn-cgi/challenge-platform/scripts/jsd/main.js',document.getElementsByTagName('head')[0].appendChild(_cpo);\";var _0xh = document.createElement('iframe');_0xh.height = 1;_0xh.width = 1;_0xh.style.position = 'absolute';_0xh.style.top = 0;_0xh.style.left = 0;_0xh.style.border = 'none';_0xh.style.visibility = 'hidden';document.body.appendChild(_0xh);function handler() {var _0xi = _0xh.contentDocument || _0xh.contentWindow.document;if (_0xi) {var _0xj = _0xi.createElement('script');_0xj.innerHTML = js;_0xi.getElementsByTagName('head')[0].appendChild(_0xj);}}if (document.readyState !== 'loading') {handler();} else if (window.addEventListener) {document.addEventListener('DOMContentLoaded', handler);} else {var prev = document.onreadystatechange || function () {};document.onreadystatechange = function (e) {prev(e);if (document.readyState !== 'loading') {document.onreadystatechange = prev;handler();}};}})();</script></body>\n</html>\n"

Same here, after several attempts on gas estimation for Optimism deployment on Sepolia - suddenly started getting this error

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sandybradley avatar sandybradley commented on June 2, 2024

trying to compile Optimism L2 on Sepolia Testnet getting the error even with --verifier etherscan --etherscan-api-key ************************ --verifier-url https://api-sepolia.etherscan.io/api The difference is in my case it returns Access Denied error using the latest forge version forge 0.2.0 (b320027 2024-01-12T00:17:44.209192793Z) please advise

2024-01-12T08:47:44.050530Z ERROR etherscan: Failed to deserialize response: expected value at line 1 column 1 res="<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\" />\n<title>403 - Forbidden: Access is denied.</title>\n<style type=\"text/css\">\r\n<!--\r\nbody{margin:0;font-size:.7em;font-family:Verdana, Arial, Helvetica, sans-serif;background:#EEEEEE;}\r\nfieldset{padding:0 15px 10px 15px;} \r\nh1{font-size:2.4em;margin:0;color:#FFF;}\r\nh2{font-size:1.7em;margin:0;color:#CC0000;} \r\nh3{font-size:1.2em;margin:10px 0 0 0;color:#000000;} \r\n#header{width:96%;margin:0 0 0 0;padding:6px 2% 6px 2%;font-family:\"trebuchet MS\", Verdana, sans-serif;color:#FFF;\r\nbackground-color:#555555;}\r\n#content{margin:0 0 0 2%;position:relative;}\r\n.content-container{background:#FFF;width:96%;margin-top:8px;padding:10px;position:relative;}\r\n-->\r\n</style>\n</head>\n<body>\n<div id=\"header\"><h1>Server Error</h1></div>\n<div id=\"content\">\n<div class=\"content-container\"><fieldset>\n<h2>403 - Forbidden: Access is denied.</h2>\n<h3>You do not have permission to view this directory or page using the credentials that you supplied.</h3>\n</fieldset></div>\n</div>\n<script>(function(){var js = \"window['__CF$cv$params']={r:'844422eafa618ec2',t:'MTcwNTA0OTI2NC4wNDAwMDA='};_cpo=document.createElement('script');_cpo.nonce='',_cpo.src='/cdn-cgi/challenge-platform/scripts/jsd/main.js',document.getElementsByTagName('head')[0].appendChild(_cpo);\";var _0xh = document.createElement('iframe');_0xh.height = 1;_0xh.width = 1;_0xh.style.position = 'absolute';_0xh.style.top = 0;_0xh.style.left = 0;_0xh.style.border = 'none';_0xh.style.visibility = 'hidden';document.body.appendChild(_0xh);function handler() {var _0xi = _0xh.contentDocument || _0xh.contentWindow.document;if (_0xi) {var _0xj = _0xi.createElement('script');_0xj.innerHTML = js;_0xi.getElementsByTagName('head')[0].appendChild(_0xj);}}if (document.readyState !== 'loading') {handler();} else if (window.addEventListener) {document.addEventListener('DOMContentLoaded', handler);} else {var prev = document.onreadystatechange || function () {};document.onreadystatechange = function (e) {prev(e);if (document.readyState !== 'loading') {document.onreadystatechange = prev;handler();}};}})();</script></body>\n</html>\n"

Same here, after several attempts on gas estimation for Optimism deployment on Sepolia - suddenly started getting this error

Same issue with Holesky

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Abhishek-2416 avatar Abhishek-2416 commented on June 2, 2024

Hey getting the same error what can i do

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