Error With vue 3

I am making a template with vue 3, but the following error is appearing
TypeError: Cannot read property ‘_c’ of undefined
at Proxy.CSidebarvue_type_template_id_6b36297c_render (coreui-vue.common.js?cf2b:16573)
at renderComponentRoot (runtime-core.esm-bundler.js?5c40:710)
at componentEffect (runtime-core.esm-bundler.js?5c40:4193)
at reactiveEffect (reactivity.esm-bundler.js?a1e9:42)
at effect (reactivity.esm-bundler.js?a1e9:17)
at setupRenderEffect (runtime-core.esm-bundler.js?5c40:4176)
at mountComponent (runtime-core.esm-bundler.js?5c40:4134)
at processComponent (runtime-core.esm-bundler.js?5c40:4094)
at patch (runtime-core.esm-bundler.js?5c40:3712)
at componentEffect (runtime-core.esm-bundler.js?5c40:4278)