401 KorAP API request failed: NA Access token is expired

[perkuhn]

Feature or bug?

Even if you use a KorAPConnection without a self-generated access token only for functions without snippet access like frequencyQuery the API call fails presumably after a certain life time of an implicit default NA token? Workaround: add accessToken=NULL as parameter. A limited life time for access tokens sounds reasonable for granting license restricted access but not for the pure quantitative calls.