PF Withdrawal - got rejected with error "PDF not opened resubmit the claim form"

Hi, Want to know if Form 15g is mandatory to apply PF withdrawal online. PF amount is from my employment from 2012-2016. I am current status is NRI. I recently applied for withdrawal but got rejected with error "PDF not opened resubmit the claim form".
Since online form requires only two file uploads - 1) Form 15g in pdf format & 2) snapshot of cancelled cheque in jpg format.
I am not clear what the error "PDF not opened resubmit the claim form" means. I can think of only form 15g not uploaded which is an optional upload.

Same problem i am facing during withdraw my PF money. 3 times submitted my claim but every time pf department stated that "Claim Rejected KINDLY REAPPLY UPLOADED DOCUMENT NOT OPEN".
Kindly help me on this matter as i need Money urgently.

For PF withdrawal, you may contact us at undersigned.