CDK Bootstrapping Issue

Hi AWS, this is the follow up question for an issue I raised in the past https://repost.aws/questions/QU1laSwxybRRiFbj1CyMuxRg/cdk-bootstraping. I ran cdk bootstrap --bootstrap-bucket-name=aws-cdk-bootcamp-bucket and it ran successfully and a CloudFormation Template CDKToolkit has been deployed successfully.

However when I ran cdk deploy --all --bootstrap-bucket-name=aws-cdk-bootcamp-bucket, I got this error:

✨  Synthesis time: 12.12s

AwsCdkBootcampStack:  start: Building cbf2aebb6eaf329b82b695324e2488fc5c97ed5adb4bb98fb6dfe7d7558af63f:current_account-current_region
AwsCdkBootcampStack:  success: Built cbf2aebb6eaf329b82b695324e2488fc5c97ed5adb4bb98fb6dfe7d7558af63f:current_account-current_region
AwsCdkBootcampStack:  start: Publishing cbf2aebb6eaf329b82b695324e2488fc5c97ed5adb4bb98fb6dfe7d7558af63f:current_account-current_region
AwsCdkBootcampStack:  fail: No bucket named 'cdk-hnb659fds-assets-111111111111-us-east-1'. Is account 111111111111 bootstrapped?

 ❌ Deployment failed: Error: Failed to publish asset cbf2aebb6eaf329b82b695324e2488fc5c97ed5adb4bb98fb6dfe7d7558af63f:current_account-current_region
    at Deployments.publishSingleAsset (C:\Users\amang\AppData\Roaming\npm\node_modules\aws-cdk\lib\index.js:445:11645)
    at async Object.publishAsset (C:\Users\amang\AppData\Roaming\npm\node_modules\aws-cdk\lib\index.js:445:197443)
    at async C:\Users\amang\AppData\Roaming\npm\node_modules\aws-cdk\lib\index.js:445:181344

Failed to publish asset cbf2aebb6eaf329b82b695324e2488fc5c97ed5adb4bb98fb6dfe7d7558af63f:current_account-current_region

Then I have updated app.py file, and here is the code:

#!/usr/bin/env python3
import os

import aws_cdk as cdk
from aws_cdk import DefaultStackSynthesizer

from aws_cdk_bootcamp.aws_cdk_bootcamp_stack import AwsCdkBootcampStack


app = cdk.App()
AwsCdkBootcampStack(app, "AwsCdkBootcampStack",
                    **synthesizer=DefaultStackSynthesizer(file_assets_bucket_name="aws-cdk-bootcamp-bucket")**
    # If you don't specify 'env', this stack will be environment-agnostic.
    # Account/Region-dependent features and context lookups will not work,
    # but a single synthesized template can be deployed anywhere.

    # Uncomment the next line to specialize this stack for the AWS Account
    # and Region that are implied by the current CLI configuration.

    #env=cdk.Environment(account=os.getenv('CDK_DEFAULT_ACCOUNT'), region=os.getenv('CDK_DEFAULT_REGION')),

    # Uncomment the next line if you know exactly what Account and Region you
    # want to deploy the stack to. */

    #env=cdk.Environment(account='123456789012', region='us-east-1'),

    # For more information, see https://docs.aws.amazon.com/cdk/latest/guide/environments.html
    )

app.synth()

and now when I ran the command cdk deploy --all, I am getting this error: Another CLI (PID=304212) is currently synthing to cdk.out. Invoke the CLI in sequence, or use '--output' to synth into different directories.

Please advise.