Last night I decided to restore my phone back to the stock ROM. I've completed this process countless times before without ever having this problem. I made my backups via Titanium and TWRP recovery. Since I had a lot of photos saved internally, I wanted to move them to my SD card before going back to the stock ROM since they would have been deleted. I used my file manager and MOVED folders containing the pictures that I wanted to save to my SD card. I think this is where my problem stems from. I probably should have copied the folders instead of just moving them. After the stock ROM loaded up I went through the introduction steps and afterwards I noticed the "Your SD card is safe to remove" notification. I went to settings to try and mount the SD card but the setting app ends up crashing. Thinking I made a mistake while going back to stock, I restored my phone back the ROM I was using my backup only to find out that the problem still persisted. The card can be mounted in windows and in recovery mode. I have no idea how to make my phone mount it normally though.