src/cfnlint/decode/cfn_json.py [410:438]:
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                    except DuplicateError as err:
                        raise JSONDecodeError(
                            doc=s,
                            pos=end,
                            errors=[
                                build_match_from_node(
                                    message='Duplicate found {}'.format(err),
                                    node=err.mapping,
                                    key=err.key,
                                ),
                                build_match(
                                    message='Duplicate found {}'.format(err),
                                    doc=s,
                                    pos=end,
                                ),
                            ]
                        )
                    except NullError as err:
                        raise JSONDecodeError(
                            doc=s,
                            pos=end,
                            errors=[
                                build_match(
                                    message='Null Error {}'.format(err),
                                    doc=s,
                                    pos=end,
                                ),
                            ]
                        )
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src/cfnlint/decode/cfn_json.py [549:577]:
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            except DuplicateError as err:
                raise JSONDecodeError(
                    doc=s,
                    pos=end,
                    errors=[
                        build_match_from_node(
                            message='Duplicate found {}'.format(err),
                            node=err.mapping,
                            key=err.key,
                        ),
                        build_match(
                            message='Duplicate found {}'.format(err),
                            doc=s,
                            pos=end,
                        ),
                    ]
                )
            except NullError as err:
                raise JSONDecodeError(
                    doc=s,
                    pos=end,
                    errors=[
                        build_match(
                            message='Null Error {}'.format(err),
                            doc=s,
                            pos=end,
                        ),
                    ]
                )
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