I think there's been a slight misunderstanding.

Meaning

I believe there's a minor error in interpretation.

Examples

• John: 'I thought we agreed on a different deadline.'<br>
• Alice: 'I think there's been a slight misunderstanding. Let's review the minutes.'
• John: 'I think there's been a slight misunderstanding. Let's clarify the terms.'
• Alice: 'I'm not sure we're on the same page.'<br>