Fix ParseConstraintError

✅ Solution

ParseConstraintError in Poetry typically stems from malformed version constraints specified when adding dependencies, such as invalid characters or syntax errors in the version string (e.g., "==*"). To fix this, carefully review and correct the version constraint string according to PEP 440 specifications; common mistakes include typos or using wildcard characters incorrectly. Ensure that the constraint is a valid version specifier like "==1.2.3", ">=1.0,<2.0", or "~=3.0".