-2
  | net::ERR_FAILED, "Generic network error"
  | 
-3
  | net::ERR_ABORTED, "An operation was aborted (due to user action)"
A Chrome-specific response code when the script hits a timeout and the runner is shutting down. To do that, the runner ends all pending requests.
  | 
-7
  | net::ERR_TIMED_OUT, "Timed out"
  | 
-10
  | net::ERR_ACCESS_DENIED, "Access denied"
  | 
-20
  | net::ERR_BLOCKED_BY_CLIENT, "Blocked"
  | 
-100
  | net::ERR_CONNECTION_CLOSED, "Connection was closed (TCP FIN)"
  | 
-101
  | net::ERR_CONNECTION_RESET, "Connection was reset (TCP RST)"
  | 
-102
  | net::ERR_CONNECTION_REFUSED, "Connection was refused"
  | 
-103
  | net::ERR_CONNECTION_ABORTED, "Connection was aborted (no ACK received)"
  | 
-104
  | net::ERR_CONNECTION_FAILED, "Connection attempt failed"
  | 
-105
  | net::ERR_NAME_NOT_RESOLVED, "Host name could not be resolved"
  | 
-106
  | net::ERR_INTERNET_DISCONNECTED, "Internet connection lost"
  | 
-107
  | net::ERR_SSL_PROTOCOL_ERROR, "SSL protocol error"
  | 
-108
  | net::ERR_ADDRESS_INVALID, "Invalid IP address and/or port number"
  | 
-109
  | net::ERR_ADDRESS_UNREACHABLE, "Unreachable IP address"
  | 
-110
  | net::ERR_SSL_CLIENT_AUTH_CERT_NEEDED, "Server requested a client certificate for SSL client authentication"
  | 
-112
  | net::ERR_NO_SSL_VERSIONS_ENABLED, "No SSL protocol versions are enabled"
  | 
-113
  | net::ERR_SSL_VERSION_OR_CIPHER_MISMATCH, "Client and server don't support a common SSL protocol version or cipher suite"
  | 
-114
  | net::ERR_SSL_RENEGOTIATION_REQUESTED, "Server requested a renegotiation (re-handshake)"
  | 
-116
  | net::ERR_CERT_ERROR_IN_SSL_RENEGOTIATION, "During SSL renegotiation (re-handshake), the server sent a certificate with an error"
  | 
-117
  | net::ERR_BAD_SSL_CLIENT_AUTH_CERT, "SSL handshake failed because of a bad or missing client certificate"
  | 
-118
  | net::ERR_CONNECTION_TIMED_OUT, "Timed out"
  | 
-123
  | net::ERR_SSL_NO_RENEGOTIATION, "Peer sent an SSL no_renegotiation alert message"
  | 
-138
  | net::ERR_ACCESS_DENIED, "Access denied"
  | 
-141
  | net::ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED, "Unable to sign the CertificateVerify data of an SSL client auth handshake with the client certificate's private key"
  | 
-145
  | net::ERR_WS_PROTOCOL_ERROR, "WebSocket protocol error - connection terminated due to a malformed frame or other protocol violation"
  | 
-147
  | net::ERR_ADDRESS_IN_USE, "Failed to bind to an address because already in use"
  | 
-148
  | net::ERR_SSL_HANDSHAKE_NOT_COMPLETED, "SSL handshake has not completed"
  | 
-149
  | net::ERR_SSL_BAD_PEER_PUBLIC_KEY, "SSL peer's public key is invalid"
  | 
-150
  | net::ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN, "Certificate didn't match built-in public key pins for the host name"
  | 
-151
  | net::ERR_CLIENT_AUTH_CERT_TYPE_UNSUPPORTED, "Server request for client certificate did not contain any types we support"
  | 
-152
  | net::ERR_ORIGIN_BOUND_CERT_GENERATION_TYPE_MISMATCH, "Server requested one type of cert, then requested a different type while the first was still being generated"
  | 
-153
  | net::ERR_SSL_DECRYPT_ERROR_ALERT, "SSL peer sent us a fatal decrypt_error alert"
  | 
-156
  | net::ERR_SSL_SERVER_CERT_CHANGED, "SSL server certificate changed in a renegotiation"
  | 
-157
  | net::ERR_SSL_INAPPROPRIATE_FALLBACK, "SSL server indicated that an unnecessary TLS version fallback was performed"
  | 
-158
  | net::ERR_CT_NO_SCTS_VERIFIED_OK, "All Signed Certificate Timestamps failed to verify"
  | 
-159
  | net::ERR_SSL_UNRECOGNIZED_NAME_ALERT, "SSL server sent us a fatal unrecognized_name alert"
  | 
-164
  | net::ERR_SSL_CLIENT_AUTH_CERT_BAD_FORMAT, "Failed to import a client certificate from the platform store into the SSL library"
  | 
-165
  | net::ERR_SSL_FALLBACK_BEYOND_MINIMUM_VERSION", "SSL server requires falling back to a version older than the configured minimum fallback version"
  | 
-166
  | net::ERR_ICANN_NAME_COLLISION", "Resolving a hostname to an IP address list included the IPv4 address \"127.0.53.53\". This is a special IP address which ICANN has recommended to indicate there was a name collision, and alert admins to a potential problem"
  | 
-200
  | net::ERR_CERT_COMMON_NAME_INVALID, "Server responded with a certificate whose common name did not match the host name"
  | 
-201
  | net::ERR_CERT_DATE_INVALID", "Server responded with a certificate that is either expired or not valid yet"
  | 
-202
  | net::ERR_CERT_AUTHORITY_INVALID, "Server responsde with a certificate signed by an untrusted authority"
  | 
-203
  | net::ERR_CERT_CONTAINS_ERRORS", "Server responded with a certificate that contains errors"
  | 
-204
  | net::ERR_CERT_NO_REVOCATION_MECHANISM, "Certificate has no mechanism for determining if it is revoked"
  | 
-205
  | net::ERR_CERT_UNABLE_TO_CHECK_REVOCATION", "Revocation information for the security certificate for this site is not available"
  | 
-206
  | net::ERR_CERT_REVOKED, "Server responded with a certificate that has been revoked"
  | 
-207
  | net::ERR_CERT_INVALID, "Server responded with a certificate that is invalid"
  | 
-208
  | net::ERR_CERT_WEAK_SIGNATURE_ALGORITHM, "server responded with a certificate that is signed using a weak signature algorithm"
  | 
-210
  | net::ERR_CERT_NON_UNIQUE_NAME, "Host name specified in the certificate is not unique"
  | 
-211
  | net::ERR_CERT_WEAK_KEY, "Server responded with a certificate that contains a weak key"
  | 
-212
  | net::ERR_CERT_NAME_CONSTRAINT_VIOLATION, "Certificate claimed DNS names that are in violation of name constraints"
  | 
-213
  | net::ERR_CERT_VALIDITY_TOO_LONG, "Certificate's validity period is too long"
  | 
-324
  | net::ERR_EMPTY_RESPONSE, "Server closed the connection without sending any data"
  | 
-803
  | net::ERR_DNS_TIMED_OUT, "DNS lookup timed out"
  | 
-9999
  | "unknown error, error not mapped"
  |