Roomba Robotic Floor Bagless Vacuum "red light flashes bare" Questions

...red power light, as well as the medium pile buttons flashes. When I first turn it on, the brush rotates for 3 to 5 seconds, then once I start moving the vacuum, it stops and that's when the lights ...

...red status light came on. As the man suggested, I checked my rear vaccuum thing to see if air was coming out, which it wasn't. I took off the dirt bin, unscrewed like 6 screws, ,wiped it down, & ...