Hit a snag.

Meaning

Encounter a problem.

Examples

• John: How's the website redesign coming along?
• Alice: We <b>hit a snag</b> with the coding; the new framework isn't compatible with the old database.
• John: Oh no! That's a significant problem. How are you planning to fix it?
• Alice: We're working on a solution, but it looks like we've <b>hit a snag</b> that will delay the launch.