Please let us know the error code you got while running the action in Photoshop.
Also, have tried creating the same action in Photoshop CC 2018? and check if that helps.
I've tried to use the image processor in Photoshop CC 2018 and get the same error. Looking to covert ~50 images from png to jpeg and to resize the images. I have tried saving them to the same location and saving them to a different location. It looks as though the process begins to run but then the error pops up. After I close the error the photoshop window has tabs with each of the images.
Any advice would be really appreciated.
Here is the error:
Try using the image processor without any action for few images and check if it gives you an error message?
I tried using the image processor without resizing and the same error occurred. Thoughts?