What is the international trade legal issue in the below question?

Company X has its seat in State A and operates in the energy sector. On 21 Jan 2021, company X concluded a contract for the extraction and sale of liquefied natural gas with State B and subsequently invested $100,000,000. to commence extraction operations in June 2021. In July 2021, State B passed legislation providing incentives to companies operating in the production of wind energy within the territory State B and limited the extractive capacity of company X within the territory of State B.

Please advise.

Thank you