ERROR: The token is expired #5884

Sudenly, I got an exception as following for my verion 6 (both of 6.1.0 and 6.2.1). It was running good yesterday.

Microsoft.IdentityModel.Tokens.SecurityTokenExpiredException HResult=0x80131500 Message=IDX10223: Lifetime validation failed. The token is expired. ValidTo: '[PII is hidden by default. Set the 'ShowPII' flag in IdentityModelEventSource.cs to true to reveal it.]', Current time: '[PII is hidden by default. Set the 'ShowPII' flag in IdentityModelEventSource.cs to true to reveal it.]'. Source=Microsoft.IdentityModel.Tokens StackTrace: at Microsoft.IdentityModel.Tokens.Validators.ValidateLifetime(Nullable1 notBefore, Nullable1 expires, SecurityToken securityToken, TokenValidationParameters validationParameters) at System.IdentityModel.Tokens.Jwt.JwtSecurityTokenHandler.ValidateLifetime(Nullable1 notBefore, Nullable1 expires, JwtSecurityToken jwtToken, TokenValidationParameters validationParameters) at System.IdentityModel.Tokens.Jwt.JwtSecurityTokenHandler.ValidateTokenPayload(JwtSecurityToken jwtToken, TokenValidationParameters validationParameters) at System.IdentityModel.Tokens.Jwt.JwtSecurityTokenHandler.ValidateToken(String token, TokenValidationParameters validationParameters, SecurityToken& validatedToken) at SNet.Web.Authentication.JwtBearer.SNetJwtSecurityTokenHandler.ValidateToken(String securityToken, TokenValidationParameters validationParameters, SecurityToken& validatedToken) in C:\dev\SNet\aspnet-core\src\SNet.Web.Core\Authentication\JwtBearer\SNetJwtSecurityTokenHandler.cs:line 36 at Microsoft.AspNetCore.Authentication.JwtBearer.JwtBearerHandler.<HandleAuthenticateAsync>d__6.MoveNext()

Please advise.