E0002: PImage needs to be a pointer
Compiler ErrorWhat it means
Just like PGraphics, a PImage holds onto a graphics-card resource (the loaded image's texture). Copying isn't allowed for the same reason.
How to fix it
Use PImage* instead of PImage.
Example
Before
PImage img;
img = loadImage("photo.jpg");
image(img, 0, 0);
After
PImage* img;
img = loadImage("photo.jpg");
image(img, 0, 0);
Notes
image() already accepts the pointer directly, so you only need -> when reading something off the image itself, like img->width.