אֽוֹתֹתֵ֗ינוּ לֹ֥א רָ֫אִ֥ינוּ אֵֽין־ע֥וֹד נָבִ֑יא וְלֹֽא־אִ֝תָּ֗נוּ יֹדֵ֥עַ עַד־מָֽה׃
We see not our signs; There is no more any prophet; Neither is there among us any that knoweth how long.
Rashi on Psalms
our signs which You promised us through Your prophetswe have not seen them in the many days that we have been in exile. Asaph prophesied concerning the days of the (last) exile.