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.
Related Issues
Real GitHub issues where developers encountered this error:
Timeline
First reported:Oct 28, 2025
Last reported:Oct 28, 2025