Fix: TypeError on calling parallel_bulk.

[dblock]

Description

Fix: TypeError on calling parallel_bulk.

Issues Resolved

Closes #599

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license. For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (567ede3) 71.86% compared to head (b3da091) 71.97%.

:exclamation: Current head b3da091 differs from pull request most recent head 331c684. Consider uploading reports for the commit 331c684 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #601 +/- ## ========================================== + Coverage 71.86% 71.97% +0.11% ========================================== Files 89 89 Lines 7932 7932 ========================================== + Hits 5700 5709 +9 + Misses 2232 2223 -9 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[harshavamsi]

@dblock do you think #600 is related? I see some bulk related operations there

[dblock]

@dblock do you think #600 is related? I see some bulk related operations there

Nope.