IdentityServer 7.4.0 License validation - wrong parameters in ErrorLog

[andrew-walnut]

Hi! After upgrading to IdentityServer 7.4.0, one of our test environments started to show the following error (it was expected to fail but not with this exception):

System.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list..

This occurs when IDS validates the allowed issuers within the license. If invalid, an ErrorLog is invoked with the wrong number of parameters:

if (_issuers.Count > license.IssuerLimit)
{
    ErrorLog.Invoke(
        "Your license for IdentityServer includes {issuerLimit} issuers but you have processed requests for {issuerCount} issuers. This indicates that requests for each issuer are being sent to this instance of IdentityServer, which may be due to a network infrastructure configuration issue. If you intend to use multiple issuers, please contact {contactInfo} at {companyName} or start a conversation with us at https://duende.link/l/contact to upgrade your license as soon as possible. In a future version, this limit will be enforced after a threshold is exceeded. The issuers used were {issuers}.",
        [license.IssuerLimit, _issuers.Count, _issuers.ToArray()]); //missing parameters for {contactInfo} and {companyName}
}

[josephdecock]

Thanks for the detailed bug report! We've validated this internally and have a fix in progress that should get published soon. Sorry for the inconvenience - the fix should be published within a day.

[maartenba]

Hi @andrew-walnut ! A 7.4.2 release has just been published which resolves this issue.