dbPath property not taking relative path from current directory

I am running dynamodb with local env.
I have specified below configuration in serverless.yml.
dynamodb:
start:
port: 8000
dbPath: .\tmp
migrate: true
migration:
dir: offline/migrations
I expected to get db file created under tmp directory created in local project. But it gave error.

**Invalid directory for database creation.Serverless:**

Start with the dbPath handling for the dynamodb.start configuration shown in serverless.yml, and trace how the plugin validates the configured directory. Reproduce the failure with a relative path such as .\tmp; done means the database file is created under the project’s local tmp directory without the invalid-directory error.

Written by the indexing model from the issue text.