Poland actually announced a ban on Ukrainian grain imports. What information did it reveal?

Ukraine does not understand this wave of cheap grain dumping. Poland was afraid that its agriculture would be ruined by Ukraine, so it had to ban it (Poland itself is also an agricultural country). After all, the impact of dumping on the industry is considerable. Poland's economy is not doing well right now. If agriculture is washed away, life will be even more difficult. Most of Ukraine's grain exports now pass through Poland. In addition, Poland does not completely prohibit imports, but prohibits sales in the country, and second-hand traffickers did not stop the imports and resold them. On the whole, it is to protect the country's agriculture, nothing special. Back to Ukraine. This wave of cheap dumping is really incomprehensible when international food prices are like this.
A few guesses are possible:
1. There is a problem with the storage in Ukraine, and the food is not easy to store, so it can only be sold at a low price.
2. There is a financial problem and the money is urgently needed.
3. There is no chance if you don’t sell any more.