what is the wrong in code?

<file path="catalog/view/theme/*/template/checkout/payment_method.twig">
<operation>
<search><![CDATA[{% for payment_method in payment_methods %}]]></search>
<add position="after"><![CDATA[
{% if payment_method.code == cod %}
{% set  cost= '-'.cod_fee_fee %}
{% endif %}
]]></add>
</operation>
</file>
<file path="catalog/view/theme/*/template/checkout/payment_method.twig">
<operation>
<search><![CDATA[{{ payment_method.title }}]]></search>
<add position="replace"><![CDATA[ {{ payment_method.title }}{{ cost }}]]></add>
</operation>
</file>
Hamdan ShafiqFull Stack PHP DeveloperAsked:
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Leonidas DosasCommented:
Try this:
<file path="catalog/view/theme/*/template/checkout/payment_method.twig">
<operation>
<search><![CDATA[{% for payment_method in payment_methods %}]]></search>
<add position="after"><![CDATA[
{% if payment_method.code == cod %}
{% set  cost= '-'.cod_fee_fee %}
{% endif %}
]]></add>
</operation>

<file path="catalog/view/theme/*/template/checkout/payment_method.twig">
<operation>
<search><![CDATA[{{ payment_method.title }}]]></search>
<add position="replace"><![CDATA[ {{ payment_method.title }}{{ cost }}]]></add>
</operation>
</file>
</file>

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As i validate your code i had this error:
The markup in the document following the root element must be well-formed
0

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