3D FlipBook - base64 images to 3Dflipbook

I would like to pass base64 images to 3D FlipBook. Therefore, I have purchased the paid version of the jQuery 3D FlipBook. However, I cannot locate the ImgBookPropsBuilder function in the 3dflipbook.min.js file. When I attempt to pass base64 images, I encounter the error: TypeError: Cannot read properties of undefined (reading 'bind') at new ClbBookPropsBuilder.