Packaging in InDesign

i have been trying package book made on indesign, every time leaves out 2 pictures when @ pdf file. pictures edited in photoshop , placed in indesign. i've checked links panel , can't find out of ordinary compared pictures package.

 

please let me know if have suggestions or know how fix this!

no red/white question marks or yellow/black triangles in links panel? if remove replace 2 troublesome files? (or relink them via links panel?)

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