prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  E0002: Unknown exception while processing rule E2530: 'dict' object has no attribute 'startswith'
  ### CloudFormation Lint Version
  
  0.82.0
  
  ### What operating system are you using?
  
  windows 11
  
  ### Describe the bug
  
  receive the E2530 error even though i dont have SnapStart in my lambda resource
  
  
  
  
  ### Expected behavior
  
  no error
  
  ### Reproduction template
  
  if i remove this lambda resource, it doesnt throw the error
  ```
    Lambda:
      Type: AWS::Lambda::Function
      DependsOn:
        - LambdaLogGroup
      Properties:
        Architectures:
          - !If
            - ConditionLambdaArmSupport
            - !Ref OSArchitechture
            - x86_64
        Code:
          S3Bucket:
            Fn::ImportValue: !Sub '${Region}-${BusinessUnit}-${Environment}-${AppName}-artifact-s3-bucket'
          S3Key: !Ref LambdaS3Key
          S3ObjectVersion: !Ref LambdaS3ObjectVersion
        Description: !Sub 'Lambda Function - ${LambdaPurpose}'
        FunctionName: !Sub '${Region}-${BusinessUnit}-${Environment}-${AppName}-lambda-${LambdaPurpose}'
        Handler: !Ref LambdaHandler
        Layers:
          - !Ref LambdaLayer
        MemorySize: !Ref LambdaMemory
        Role: !GetAtt LambdaRole.Arn
        Runtime: !Ref LambdaRuntime
        Timeout: !Ref LambdaTimeout
        VpcConfig: !If
          - ConditionVpcAttachment
          - SecurityGroupIds:
              - Fn::ImportValue: !Sub '${Region}-${BusinessUnit}-${Environment}-${AppName}-sg-${LambdaPurpose}'
            SubnetIds:
              - Fn::ImportValue: !Sub '${Region}-${BusinessUnit}-${Environment}-${VpcAttachment}-subnet-1-id'
              - Fn::ImportValue: !Sub '${Region}-${BusinessUnit}-${Environment}-${VpcAttachment}-subnet-2-id'
              - !If
                - ConditionThirdAZ
                - Fn::ImportValue: !Sub '${Region}-${BusinessUnit}-${Environment}-${VpcAttachment}-subnet-3-id'
                - !Ref AWS::NoValue
          - !Ref AWS::NoValue
        Tags:
          - Key: Name
            Value: !Sub '${Region}-${BusinessUnit}-${Environment}-${AppName}-lambda-${LambdaPurpose}'
          - Key: region-abbreviation
            Value: !Ref Region
          - Key: business-unit
            Value: !Ref BusinessUnit
          - Key: environment-type
            Value: !Ref Environment
          - Key: app-name
            Value: !Ref AppName
          - Key: service-type
            Value: !Ref Service
          - Key: cost-center
            Value: !Ref CostCenter
          - Key: compliance-type
            Value: !Ref Compliance
          - Key: owner-name
            Value: !Ref OwnerName
          - Key: owner-email-id
            Value: !Ref OwnerEmail
          - Key: patch-group
            Value: !Ref PatchGroup
          - Key: criticality-level
            Value: !Ref CriticalityLevel
          - Key: map-migrated
            Value: !Ref MapMigrated
  
  ```
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py`
  Content:
  ```
  1 """
  2 Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  3 SPDX-License-Identifier: MIT-0
  4 """
  5 
  6 from cfnlint.rules import CloudFormationLintRule, RuleMatch
  7 
  8 
  9 class SnapStartEnabled(CloudFormationLintRule):
  10     """Check if the SnapStart is enabled for certain java runtimes"""
  11 
  12     id = "I2530"
  13     shortdesc = "Validate that SnapStart is configured for >= Java11 runtimes"
  14     description = (
  15         "SnapStart is a no-cost feature that can increase performance up to 10x. "
  16         "Enable SnapStart for Java 11 and greater runtimes"
  17     )
  18     source_url = "https://docs.aws.amazon.com/lambda/latest/dg/snapstart.html"
  19     tags = ["resources", "lambda"]
  20 
  21     def __init__(self):
  22         super().__init__()
  23         self.resource_property_types.append("AWS::Lambda::Function")
  24 
  25     def validate(self, runtime, path):
  26         if not runtime:
  27             return []
  28 
  29         if not (runtime.startswith("java")) and runtime not in ["java8.al2", "java8"]:
  30             return []
  31 
  32         return [
  33             RuleMatch(
  34                 path,
  35                 f"When using {runtime} configure SnapStart",
  36                 rule=self,
  37             )
  38         ]
  39
  ```
  
  Path: `src/cfnlint/rules/resources/lmbd/SnapStartSupported.py`
  Content:
  ```
  1 """
  2 Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  3 SPDX-License-Identifier: MIT-0
  4 """
  5 
  6 from cfnlint.rules import CloudFormationLintRule, RuleMatch
  7 
  8 
  9 class SnapStartSupported(CloudFormationLintRule):
  10     """Check if Lambda function using SnapStart has the correct runtimes"""
  11 
  12     id = "E2530"
  13     shortdesc = "SnapStart supports the configured runtime"
  14     description = (
  15         "To properly leverage SnapStart, you must have a runtime of Java11 or greater"
  16     )
  17     source_url = "https://docs.aws.amazon.com/lambda/latest/dg/snapstart.html"
  18     tags = ["resources", "lambda"]
  19 
  20     def __init__(self):
  21         super().__init__()
  22         self.resource_property_types.append("AWS::Lambda::Function")
  23         self.child_rules = {"I2530": None}
  24 
  25     def match_resource_properties(self, properties, _, path, cfn):
  26         """Check CloudFormation Properties"""
  27         matches = []
  28 
  29         for scenario in cfn.get_object_without_nested_conditions(properties, path):
  30             props = scenario.get("Object")
  31 
  32             runtime = props.get("Runtime")
  33             snap_start = props.get("SnapStart")
  34             if not snap_start:
  35                 if self.child_rules["I2530"]:
  36                     matches.extend(self.child_rules["I2530"].validate(runtime, path))
  37                 continue
  38 
  39             if snap_start.get("ApplyOn") != "PublishedVersions":
  40                 continue
  41 
  42             if (
  43                 runtime
  44                 and (not runtime.startswith("java"))
  45                 and runtime not in ["java8.al2", "java8"]
  46             ):
  47                 matches.append(
  48                     RuleMatch(
  49                         path + ["SnapStart", "ApplyOn"],
  50                         f"{runtime} is not supported for SnapStart enabled functions",
  51                     )
  52                 )
  53 
  54         return matches
  55
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py b/src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py
  --- a/src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py
  +++ b/src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py
  @@ -23,7 +23,7 @@
           self.resource_property_types.append("AWS::Lambda::Function")
   
       def validate(self, runtime, path):
  -        if not runtime:
  +        if not isinstance(runtime, str):
               return []
   
           if not (runtime.startswith("java")) and runtime not in ["java8.al2", "java8"]:
  diff --git a/src/cfnlint/rules/resources/lmbd/SnapStartSupported.py b/src/cfnlint/rules/resources/lmbd/SnapStartSupported.py
  --- a/src/cfnlint/rules/resources/lmbd/SnapStartSupported.py
  +++ b/src/cfnlint/rules/resources/lmbd/SnapStartSupported.py
  @@ -39,6 +39,10 @@
               if snap_start.get("ApplyOn") != "PublishedVersions":
                   continue
   
  +            # Validate runtime is a string before using startswith
  +            if not isinstance(runtime, str):
  +                continue
  +
               if (
                   runtime
                   and (not runtime.startswith("java"))
  
verification_info: {"golden_diff": "diff --git a/src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py b/src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py\n--- a/src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py\n+++ b/src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py\n@@ -23,7 +23,7 @@\n         self.resource_property_types.append(\"AWS::Lambda::Function\")\n \n     def validate(self, runtime, path):\n-        if not runtime:\n+        if not isinstance(runtime, str):\n             return []\n \n         if not (runtime.startswith(\"java\")) and runtime not in [\"java8.al2\", \"java8\"]:\ndiff --git a/src/cfnlint/rules/resources/lmbd/SnapStartSupported.py b/src/cfnlint/rules/resources/lmbd/SnapStartSupported.py\n--- a/src/cfnlint/rules/resources/lmbd/SnapStartSupported.py\n+++ b/src/cfnlint/rules/resources/lmbd/SnapStartSupported.py\n@@ -39,6 +39,10 @@\n             if snap_start.get(\"ApplyOn\") != \"PublishedVersions\":\n                 continue\n \n+            # Validate runtime is a string before using startswith\n+            if not isinstance(runtime, str):\n+                continue\n+\n             if (\n                 runtime\n                 and (not runtime.startswith(\"java\"))\n", "issue": "E0002: Unknown exception while processing rule E2530: 'dict' object has no attribute 'startswith'\n### CloudFormation Lint Version\n\n0.82.0\n\n### What operating system are you using?\n\nwindows 11\n\n### Describe the bug\n\nreceive the E2530 error even though i dont have SnapStart in my lambda resource\r\n\r\n\r\n\n\n### Expected behavior\n\nno error\n\n### Reproduction template\n\nif i remove this lambda resource, it doesnt throw the error\r\n```\r\n  Lambda:\r\n    Type: AWS::Lambda::Function\r\n    DependsOn:\r\n      - LambdaLogGroup\r\n    Properties:\r\n      Architectures:\r\n        - !If\r\n          - ConditionLambdaArmSupport\r\n          - !Ref OSArchitechture\r\n          - x86_64\r\n      Code:\r\n        S3Bucket:\r\n          Fn::ImportValue: !Sub '${Region}-${BusinessUnit}-${Environment}-${AppName}-artifact-s3-bucket'\r\n        S3Key: !Ref LambdaS3Key\r\n        S3ObjectVersion: !Ref LambdaS3ObjectVersion\r\n      Description: !Sub 'Lambda Function - ${LambdaPurpose}'\r\n      FunctionName: !Sub '${Region}-${BusinessUnit}-${Environment}-${AppName}-lambda-${LambdaPurpose}'\r\n      Handler: !Ref LambdaHandler\r\n      Layers:\r\n        - !Ref LambdaLayer\r\n      MemorySize: !Ref LambdaMemory\r\n      Role: !GetAtt LambdaRole.Arn\r\n      Runtime: !Ref LambdaRuntime\r\n      Timeout: !Ref LambdaTimeout\r\n      VpcConfig: !If\r\n        - ConditionVpcAttachment\r\n        - SecurityGroupIds:\r\n            - Fn::ImportValue: !Sub '${Region}-${BusinessUnit}-${Environment}-${AppName}-sg-${LambdaPurpose}'\r\n          SubnetIds:\r\n            - Fn::ImportValue: !Sub '${Region}-${BusinessUnit}-${Environment}-${VpcAttachment}-subnet-1-id'\r\n            - Fn::ImportValue: !Sub '${Region}-${BusinessUnit}-${Environment}-${VpcAttachment}-subnet-2-id'\r\n            - !If\r\n              - ConditionThirdAZ\r\n              - Fn::ImportValue: !Sub '${Region}-${BusinessUnit}-${Environment}-${VpcAttachment}-subnet-3-id'\r\n              - !Ref AWS::NoValue\r\n        - !Ref AWS::NoValue\r\n      Tags:\r\n        - Key: Name\r\n          Value: !Sub '${Region}-${BusinessUnit}-${Environment}-${AppName}-lambda-${LambdaPurpose}'\r\n        - Key: region-abbreviation\r\n          Value: !Ref Region\r\n        - Key: business-unit\r\n          Value: !Ref BusinessUnit\r\n        - Key: environment-type\r\n          Value: !Ref Environment\r\n        - Key: app-name\r\n          Value: !Ref AppName\r\n        - Key: service-type\r\n          Value: !Ref Service\r\n        - Key: cost-center\r\n          Value: !Ref CostCenter\r\n        - Key: compliance-type\r\n          Value: !Ref Compliance\r\n        - Key: owner-name\r\n          Value: !Ref OwnerName\r\n        - Key: owner-email-id\r\n          Value: !Ref OwnerEmail\r\n        - Key: patch-group\r\n          Value: !Ref PatchGroup\r\n        - Key: criticality-level\r\n          Value: !Ref CriticalityLevel\r\n        - Key: map-migrated\r\n          Value: !Ref MapMigrated\r\n\r\n```\n", "before_files": [{"content": "\"\"\"\nCopyright Amazon.com, Inc. or its affiliates. All Rights Reserved.\nSPDX-License-Identifier: MIT-0\n\"\"\"\n\nfrom cfnlint.rules import CloudFormationLintRule, RuleMatch\n\n\nclass SnapStartEnabled(CloudFormationLintRule):\n    \"\"\"Check if the SnapStart is enabled for certain java runtimes\"\"\"\n\n    id = \"I2530\"\n    shortdesc = \"Validate that SnapStart is configured for >= Java11 runtimes\"\n    description = (\n        \"SnapStart is a no-cost feature that can increase performance up to 10x. \"\n        \"Enable SnapStart for Java 11 and greater runtimes\"\n    )\n    source_url = \"https://docs.aws.amazon.com/lambda/latest/dg/snapstart.html\"\n    tags = [\"resources\", \"lambda\"]\n\n    def __init__(self):\n        super().__init__()\n        self.resource_property_types.append(\"AWS::Lambda::Function\")\n\n    def validate(self, runtime, path):\n        if not runtime:\n            return []\n\n        if not (runtime.startswith(\"java\")) and runtime not in [\"java8.al2\", \"java8\"]:\n            return []\n\n        return [\n            RuleMatch(\n                path,\n                f\"When using {runtime} configure SnapStart\",\n                rule=self,\n            )\n        ]\n", "path": "src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py"}, {"content": "\"\"\"\nCopyright Amazon.com, Inc. or its affiliates. All Rights Reserved.\nSPDX-License-Identifier: MIT-0\n\"\"\"\n\nfrom cfnlint.rules import CloudFormationLintRule, RuleMatch\n\n\nclass SnapStartSupported(CloudFormationLintRule):\n    \"\"\"Check if Lambda function using SnapStart has the correct runtimes\"\"\"\n\n    id = \"E2530\"\n    shortdesc = \"SnapStart supports the configured runtime\"\n    description = (\n        \"To properly leverage SnapStart, you must have a runtime of Java11 or greater\"\n    )\n    source_url = \"https://docs.aws.amazon.com/lambda/latest/dg/snapstart.html\"\n    tags = [\"resources\", \"lambda\"]\n\n    def __init__(self):\n        super().__init__()\n        self.resource_property_types.append(\"AWS::Lambda::Function\")\n        self.child_rules = {\"I2530\": None}\n\n    def match_resource_properties(self, properties, _, path, cfn):\n        \"\"\"Check CloudFormation Properties\"\"\"\n        matches = []\n\n        for scenario in cfn.get_object_without_nested_conditions(properties, path):\n            props = scenario.get(\"Object\")\n\n            runtime = props.get(\"Runtime\")\n            snap_start = props.get(\"SnapStart\")\n            if not snap_start:\n                if self.child_rules[\"I2530\"]:\n                    matches.extend(self.child_rules[\"I2530\"].validate(runtime, path))\n                continue\n\n            if snap_start.get(\"ApplyOn\") != \"PublishedVersions\":\n                continue\n\n            if (\n                runtime\n                and (not runtime.startswith(\"java\"))\n                and runtime not in [\"java8.al2\", \"java8\"]\n            ):\n                matches.append(\n                    RuleMatch(\n                        path + [\"SnapStart\", \"ApplyOn\"],\n                        f\"{runtime} is not supported for SnapStart enabled functions\",\n                    )\n                )\n\n        return matches\n", "path": "src/cfnlint/rules/resources/lmbd/SnapStartSupported.py"}], "after_files": [{"content": "\"\"\"\nCopyright Amazon.com, Inc. or its affiliates. All Rights Reserved.\nSPDX-License-Identifier: MIT-0\n\"\"\"\n\nfrom cfnlint.rules import CloudFormationLintRule, RuleMatch\n\n\nclass SnapStartEnabled(CloudFormationLintRule):\n    \"\"\"Check if the SnapStart is enabled for certain java runtimes\"\"\"\n\n    id = \"I2530\"\n    shortdesc = \"Validate that SnapStart is configured for >= Java11 runtimes\"\n    description = (\n        \"SnapStart is a no-cost feature that can increase performance up to 10x. \"\n        \"Enable SnapStart for Java 11 and greater runtimes\"\n    )\n    source_url = \"https://docs.aws.amazon.com/lambda/latest/dg/snapstart.html\"\n    tags = [\"resources\", \"lambda\"]\n\n    def __init__(self):\n        super().__init__()\n        self.resource_property_types.append(\"AWS::Lambda::Function\")\n\n    def validate(self, runtime, path):\n        if not isinstance(runtime, str):\n            return []\n\n        if not (runtime.startswith(\"java\")) and runtime not in [\"java8.al2\", \"java8\"]:\n            return []\n\n        return [\n            RuleMatch(\n                path,\n                f\"When using {runtime} configure SnapStart\",\n                rule=self,\n            )\n        ]\n", "path": "src/cfnlint/rules/resources/lmbd/SnapStartEnabled.py"}, {"content": "\"\"\"\nCopyright Amazon.com, Inc. or its affiliates. All Rights Reserved.\nSPDX-License-Identifier: MIT-0\n\"\"\"\n\nfrom cfnlint.rules import CloudFormationLintRule, RuleMatch\n\n\nclass SnapStartSupported(CloudFormationLintRule):\n    \"\"\"Check if Lambda function using SnapStart has the correct runtimes\"\"\"\n\n    id = \"E2530\"\n    shortdesc = \"SnapStart supports the configured runtime\"\n    description = (\n        \"To properly leverage SnapStart, you must have a runtime of Java11 or greater\"\n    )\n    source_url = \"https://docs.aws.amazon.com/lambda/latest/dg/snapstart.html\"\n    tags = [\"resources\", \"lambda\"]\n\n    def __init__(self):\n        super().__init__()\n        self.resource_property_types.append(\"AWS::Lambda::Function\")\n        self.child_rules = {\"I2530\": None}\n\n    def match_resource_properties(self, properties, _, path, cfn):\n        \"\"\"Check CloudFormation Properties\"\"\"\n        matches = []\n\n        for scenario in cfn.get_object_without_nested_conditions(properties, path):\n            props = scenario.get(\"Object\")\n\n            runtime = props.get(\"Runtime\")\n            snap_start = props.get(\"SnapStart\")\n            if not snap_start:\n                if self.child_rules[\"I2530\"]:\n                    matches.extend(self.child_rules[\"I2530\"].validate(runtime, path))\n                continue\n\n            if snap_start.get(\"ApplyOn\") != \"PublishedVersions\":\n                continue\n\n            # Validate runtime is a string before using startswith\n            if not isinstance(runtime, str):\n                continue\n\n            if (\n                runtime\n                and (not runtime.startswith(\"java\"))\n                and runtime not in [\"java8.al2\", \"java8\"]\n            ):\n                matches.append(\n                    RuleMatch(\n                        path + [\"SnapStart\", \"ApplyOn\"],\n                        f\"{runtime} is not supported for SnapStart enabled functions\",\n                    )\n                )\n\n        return matches\n", "path": "src/cfnlint/rules/resources/lmbd/SnapStartSupported.py"}]}