ErrTokenContextMissing denotes a token was not passed into the parsing middleware's context.

ErrTokenExpired denotes a token's expire header (exp) has since passed.

ErrTokenInvalid denotes a token was not able to be validated.

ErrTokenMalformed denotes a token was not formatted as a JWT token.

ErrTokenNotActive denotes a token's not before header (nbf) is in the future.

ErrUnexpectedSigningMethod denotes a token was signed with an unexpected signing method.