fix(TPCUtils): undefined is not an object (evaluating 'this.tpcUtils.replaceTrack(e,t).then')
fix(TPCUtils): undefined is not an object (evaluating 'this.tpcUtils.replaceTrack(e,t).then')

By looking at the replaceTrack usages it's possible for it to be called with both new and old tracks null/undefined.

jitsi/lib-jitsi-meet,jitsi/lib-jitsi-meet