Sundial Growers Inc. SNDL, -2.65% said Wednesday that class-action lawsuits alleging it failed to disclose that a large amount of cannabis had been returned by a client because of contamination are without merit and said it would vigorously defend itself against them. The Canadian cannabis company said the suits stem from a “single online article, which erroneously described a since-resolved commercial dispute.” The article, which was cited in the suits, was a report by MarketWatch in August that said Zenabis Global Inc. ZENA, +7.69% returned a half-ton of Sundial cannabis because it contained visible mold, parts of rubber gloves and other non-cannabis material, citing people familiar with the matter. “All of our customer agreements include provisions to replace or return product under certain conditions,” Sundial said in a statement. “The amount of product returned was a fraction of the 554 kilograms erroneously quoted in the article.” Shares were not yet active in premarket trading but have fallen 43% in the past month, while the ETFMG Alternative Harvest ETF MJ, -1.72% has lost 20% and the S&P 500 SPX, -1.56% has dipped by about 3%.