No SD card... banner across top of SmartMatrix panel

Yes there is and was while running AnimatedGIFs.ino. Tried the latest download from Github and uploaded into my Teensy just fine. What wasn’t just fine is the No SD card… message scrolling across the top of the display. Yes, I renamed the GIFS folder to /gifs/ to no avail. The reason I decided to install the newest software (Teensy 4.1/SmartMatrixShield 4 v5) was because my gifs started freezing. Actually the very first one froze after running a spell. Now I’m stumped and I haven’t found any solutions on this board. Anyone have any ideas as to what’s going on here?