This error occurs when the parser of the framework cannot read a Vue, Svelte, or Astro component. The message shows the location and the explanation from that parser.
Reported
<template><button></template>SW10002: invalid component syntax: SyntaxError: Element is missing end tag.
Source format: Vue
Converter: @vue/language-core@3.3.14
Fixed
<template><button></button></template>How to fix
Fix the syntax at the location in the message, as in the example, where the
<button> element was not closed.
If the component is valid but its converted script is not, the error is SW31004 instead.