Esp8266MOD+htpp// url post data on server

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2

If i add these together

  String dweetName = "PARAM";
  String path = "/admin_ws/api.php" + dweetName;

path will look like this

 "/admin_ws/api.phpPARAM"

There probably needs to be a separator.
the same here :

postData +=  charges,charges_2,first_weight_time,gross,item,net,party_address,party_name,rstNo,second_weight_time,tare,vehicle_type,vehile_no,weighbridgeId,localRstNo;

So you are not sending the data in a way that it is expected.