First off, don't panic. The warning sticker on your product is required by law.
This warning sticker is required by the State of California’s Proposition 65 Law. These warnings are EVERYWHERE in California, from consumer products to food to tourist attractions, including Disneyland!
See this list below provided by Amazon containing everyday products that may contain the same warning that brought you here!
Click Here to see Amazon's Prop 65 Warning: https://www.amazon.com/gp/help/customer/display.html?nodeId=3234041
Our products may contain some of the chemicals on the Prop 65 list.
Unfortunately, Prop 65 has much more strict guidelines than other governing bodies (such as the FDA), which means products must have this warning label even if the level of chemicals in it poses no risk to human health. In fact, many of the chemicals on the list are considered safe by other government/scientific agencies.
See the entire list of the chemicals here: