Change8
Error1 reports

Fix UnboundLocalError

in LangChain

Solution

UnboundLocalError arises when a variable is referenced before it has been assigned a value within its scope, often happening in conditional statements where the variable might not be initialized. Ensure the variable causing the error is assigned a default value or initialized before the conditional block that uses it; this guarantees it's always defined regardless of the execution path. A common fix involves assigning None or a suitable initial value before the conditional.

Timeline

First reported:Oct 28, 2025
Last reported:Oct 28, 2025

Need More Help?

View the full changelog and migration guides for LangChain

View LangChain Changelog