I’ve tried a couple different SMS apps and have a few different camera apps installed but cannot use “Take a Photo” from any SMS app. It opens a little dialog at the bottom of the screen where a camera app should show up to select for taking pictures but nothing shows up and it says no apps available.
What OS version are you running?
Just tested this flow with the default SMS and Camera app (running on iode 7.7) and it worked as expected - camera is opened.
Is this the behavior when using the default SMS app and default camera apps?