usebruno/bruno · error · Error

Migration aborted — target yml file(s) already exist: ${coll

Error message

Migration aborted — target yml file(s) already exist:
${collisions.join('\n')}

What it means

Error "Migration aborted — target yml file(s) already exist: ${collisions.join('\n')}" thrown in usebruno/bruno.

Source

Thrown at packages/bruno-electron/src/ipc/yml-migration.js:151

          throw parseError;
        }
        parseErrors.push(`${bruFilePath}: ${parseError.message}`);
      }
      emitProgress('parsing', i + 1, bruFiles.length);
    }

    if (parseErrors.length > 0) {
      throw new Error(`Migration aborted — ${parseErrors.length} file(s) failed to parse:\n${parseErrors.join('\n')}`);
    }

    const collisions = conversionPlan
      .map(({ ymlPath }) => ymlPath)
      .filter((ymlPath) => fs.existsSync(ymlPath));
    if (fs.existsSync(ocYmlPath)) {
      collisions.push(ocYmlPath);
    }
    if (collisions.length > 0) {
      throw new Error(`Migration aborted — target yml file(s) already exist:\n${collisions.join('\n')}`);
    }

    // Phase 2: write the converted yml files
    const totalWrites = conversionPlan.length + 1;
    for (let i = 0; i < conversionPlan.length; i++) {
      checkCancelled();
      const { ymlPath, ymlContent } = conversionPlan[i];
      await writeFile(ymlPath, ymlContent);
      writtenYmlFiles.push(ymlPath);
      emitProgress('writing', i + 1, totalWrites);
    }
    checkCancelled();
    await writeFile(ocYmlPath, ymlCollectionContent);
    writtenYmlFiles.push(ocYmlPath);
    emitProgress('writing', totalWrites, totalWrites);

    // Phase 3: back up the bru sources, then remove them
    const originalsToRemove = [...bruFiles, brunoJsonPath];

View on GitHub (pinned to 9bdd81c7bd)

Solutions

1. Remove or rename the listed existing yml files, then re-run the migration.
2. Back up and clean the target files before retrying.

When it happens

Trigger: Thrown at packages/bruno-electron/src/ipc/yml-migration.js:151 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of usebruno/bruno@9bdd81c7bd (2026-08-13). Data as JSON: /api/errors/7863117fc7ccd8eb. Report an issue: GitHub.