How to fix a duplicate product?

Question

excel

Hello. Tell me please. The situation is as follows: photos of goods and an excel file with their description were uploaded to the website of the online store (Woodmart theme). An error was found after loading - two different products had the same article number incorrectly indicated. Since the price of the goods is different, then for one product photos of the goods are not loaded and the price is indicated, for example, 123 rubles. - 143 rubles, but should be 123 rubles. I fixed the error and import the excel file to the site through the All Import admin panel, but the import is interrupted by about 90%. Writes fatal error. If I understand correctly, it turned out to be duplicates of the goods. How can this problem be fixed? Thank you.