unfortunately there isn't a simple answer here
you can try pounding with a fist inside and outside of the door as you attempt to open to see if anything will free up
if not, you will need to fight the panel off or partially off with the door closed
this isn't easy so it might be worth having it done professionally to minimize damage
if you prefer to try yourself be sure to put the seat back as far as possible to give yourself as much room as possible to work
Sorry if you were hoping for a different answer, please don't shoot the messenger - I can only give the honest answer, which I have. Please remember that a low rating PUNISHES me for my honest and prompt response, and I receive nothing for my time and answer until a positive rating is clicked.Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.