Hello, I am new to GNU Radio and I am trying to understand more by checking the fm_rx and fm_tx examples in the gnuradio/gr-analog/examples folder. I open these two grc files from the GNU Radio Companion. Out of box, there is an error message in Polyphase Arbitrary Resampler saying Expression None is invalid for type `real_vector` of parameter `Taps`. I tried to google around the forum and the internet but I couldn't find anything useful to fix this. I doubt it has something to do with the last parameter "window.WIN_KAISER" but I am not sure.
Could anyone give me some pointers? Thank you in advance. Best regards, Clark
