The Dutch Data Protection Authority has fined Uber €825 million (about $966 million), marking the second-largest penalty imposed under Europe’s General Data Protection Regulation.

The regulator’s investigation followed complaints that Uber had deactivated drivers’ accounts through an automated system without providing adequate warning or ensuring sufficient human oversight, according to Reuters.

Dutch DPA deputy chair Monique Verdier said Uber had committed “serious infringements.”

“A computer should not make decisions on its own that have [such] major consequences,” Verdier said.

Uber disputed the regulator’s findings, saying most driver suspensions are temporary and that no permanent account deactivation occurs without human review.

The company also said drivers can appeal suspension decisions.

However, Dutch regulators maintained that some drivers were permanently deactivated without human oversight, a claim Uber rejected.

The company said it would appeal the ruling.

“We strongly disagree with this decision and disproportionate fine,” an Uber spokesperson stated.