European Tesla customers who were awaiting delivery of vehicles manufactured at the automaker’s new plant near Berlin, Germany, will have to wait a little longer. Multiple customers claim that their vehicles have been delayed indefinitely.

“The vehicle is in the delivery center and cannot be delivered due to a significant defect in the drive unit,” poster MarkusF1 wrote on TFFforum.de, as translated by Google. “Delivery will be postponed indefinitely!”

Another poster wrote on Saturday, June 25 that deliveries for that day and the beginning of this week were canceled due to a “security-related defect, which, according to initial findings, cannot be remedied with a software update.”

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The scope of the problem is still the subject of some investigation on the site. A Norwegian owner who spoke to DriveTeslaCanada.ca, said that their Model Y has been affected by the same issue despite having taken delivery three weeks ago. The owner said their car could not be driven until replacement parts came.

Other buyers have taken to Twitter to say that their vehicles have been delayed. One customer said that their delivery window got pushed to November-December from September-October. It was not made explicit, however, that the issues were related.

Despite that, some customers are still reporting that they have received their vehicle. Meanwhile, a forum user named Jim claimed today that a service advisor told them their vehicle will be repaired at a delivery center and that the automaker was aiming to complete the fix in the second week of July.

The delay, however, is just the latest in a series of issues for Tesla’s Berlin gigafactory. Just last week, the automaker’s CEO called it and the Austin gigafactory “gigantic money furnaces.” With supply chain issues continuing to afflict the automotive industry, though, production issues are more challenging than ever to resolve.