Harley-Davidson has stopped production and deliveries of its first electric motorcycle after discovering an issue in the final quality checks.

The company said it has discovered a “non-standard condition” with LiveWire, which it began shipping to its dealers late last month, prompting additional testing and analysis.

The company did not offer a timeline as to when the production will resume.

Harley-Davidson is betting on electric motorcycles to attract the next generation of younger and more environmentally conscious riders to reverse declining U.S. sales.

The $29,799 LiveWire has been available for preorder in the United States since January.