extra element in pod template

I have created a Pod to show two different images in a <picture> element in a responsive layout.
I have created this template:
`<picture class=”bande”>
<source media=”(min-width: 40em)”
srcset=”{@image_desktop._src,esc_url} 932w”
sizes=”932px”>
<source
srcset=”{@image_mobile._src,esc_url} 300w”
sizes=”300px”>
<img src=”{@image_desktop._src,esc_url}”
class=”bande__img”
alt=”{@attribut_alt}”>
<picture>`
I display this template with the auto template options, where it replaces the content.
However, the code generated contains an extra <picture> element inside the <picture> element that I have specified, like this:

<picture class="bande">
		<source media="(min-width: 40em)" srcset="https://achilletartempion.com/wp-content/uploads/2020/01/11-histoire_Horizontal.jpg 932w" sizes="932px">
		<source srcset="https://achilletartempion.com/wp-content/uploads/2020/01/11-histoire_Vertical.jpg 300w" sizes="300px">
		<img src="https://achilletartempion.com/wp-content/uploads/2020/01/11-histoire_Horizontal.jpg" class="bande__img" alt="alt text">
	<picture></picture></picture>

I can’t figure out where that superfluous picture comes from. How can I get rid of it?

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