Look at the base of the stock. You may see some scale inscets on it. They dont move but do suck the sap out.
I had this problem with a few plants as well as my citrus tree.
Seems almost like water burn marks.
When ur watering make sure not to splash on the leaves and leave water on them. It will cause burn spots simular to what yours looks like.
Honey from humbolt... i use it and have had my buds run the same sap out. Its suger. Basicly sap. That your seeing.
Taste it. It will be very sweet.
Correct me if im wrong please.
Some stuff says not avalible for your location. (Canada) iv run into this problem many times with products people on here use from the states but we cant get here in Canada.
The info and stuff will show up and you can read about the item... just cant order
Amazon that is