.net - RxApp initialization errors in nunit tests -

.net - RxApp initialization errors in nunit tests -

i'm trying run nunit tests utilize reactiveui objects.

for new test i'm consistently getting next exception

system.typeinitializationexception : type initializer 'reactiveui.rxapp' threw exception. ----> system.typeloadexception : not load type 'reactiveui.iactivationforviewfetcher' assembly 'reactiveui, version=5.4.0.0, culture=neutral, publickeytoken=null'.

other tests in same assembly utilize reactiveui work. have no thought why error occurring

i having issue , went away after upgrading reactiveui 6.

.net nunit reactiveui