Laminated glass problem

Hello everyone, I'm facing an issue with laminated glass  used in a laser machine door. 

The glass consists of two layers ( 4mm+4mm) with a black film in between. 

Recently, small transparent dots have appeared, almost as if the film is degrading or dissolving , and the glass looks foggy up close. 

Does anyone have any idea about the cause or a solution for this problem? 

This is concerning because it could potentially expose workers to laser beams during cutting, posing serious health risks to their eyes .
this happened after little time of machine operating only 

Thank you

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