I'm using the standard camera app that came with my S8+. Every now and then, when I try to capture an image, I can't get the shutter to "click." Instead, the screen presents a series of vertical lines along the bottom of the screen. They seem to represent some type of setting that I'm supposed to adjust, but I don't know how or what the lines mean. I can't take a screen capture to show what I'm seeing, so please forgive my explanation. I just want the camera to capture the image without any further adjustment. Thanks.