要解决"Amazon ECS: Task definition does not support FARGATE launch type."错误，您需要更改任务定义中的启动类型为EC2。以下是一个代码示例，演示如何使用AWS SDK for Python（Boto3）更改任务定义的启动类型：

import boto3

# 创建 ECS 客户端
ecs_client = boto3.client('ecs')

# 定义要更改的任务定义
task_definition = 'your-task-definition'

# 获取现有的任务定义
response = ecs_client.describe_task_definition(
    taskDefinition=task_definition
)

# 修改启动类型为 EC2
response['taskDefinition']['requiresCompatibilities'] = ['EC2']

# 更新任务定义
response = ecs_client.register_task_definition(
    family=response['taskDefinition']['family'],
    containerDefinitions=response['taskDefinition']['containerDefinitions'],
    requiresCompatibilities=response['taskDefinition']['requiresCompatibilities'],
    taskRoleArn=response['taskDefinition']['taskRoleArn'],
    executionRoleArn=response['taskDefinition']['executionRoleArn'],
    networkMode=response['taskDefinition']['networkMode'],
    cpu=response['taskDefinition']['cpu'],
    memory=response['taskDefinition']['memory'],
    volumes=response['taskDefinition']['volumes']
)

print("任务定义已成功更新为 EC2 启动类型。")

请确保您已正确配置 AWS 访问凭证，并将your-task-definition替换为您要更新的任务定义的名称。运行此代码后，任务定义的启动类型将更改为EC2。