i am running cvcameranode in client ros node and rqtimageview in another ros node running in pi 4 B. I'm using both pi4B. Here i have attached touchscreen in one pi where i'm trying to run rqtimagevidw. but after i check everything like topics and echo them and try to show them in image_view i get warnings like can't register gtkwidget and others. and the camera node also stoops after that. i've made the camerea node pi ad wireless access point and connected another pi with it wirelesly.