This is so odd to me. I've been using Opera GX to open PDFs which I usually need to print for work and it's worked out fine before (for almost 2 years actually) but suddenly it just started being stuck in the "spooling" phase.
At first, I thought it was just my printer and the USB connection not working so I've tried to restart print spooler, reinstalling new drivers, restarting both my PC and my printer. It does clear the queue but when I try to print again, it gets stuck again. Then I checked if I could print through Windows File Explorer directly, it worked. I tried to print the PDF through Microsoft Edge, it worked.
So I realized it was just my Opera GX. I don't really use other browsers and I just really find it more convenient if I print through Opera GX since I use it for everything so if anyone could enlighten me what the hell is happening and what I can do, please help. My OCD won't let me sleep at night. I already have a workaround for this which is just use Adobe PDF Viewer but it's so time consuming.
If it helps, my printer is Brother DCP T-300.