{"record":{"id":"bcf0d84db3c67f10","repo":"leptos-rs/leptos","slug":"no-current-reactive-owner-found","errorCode":null,"errorMessage":"no current reactive Owner found","messagePattern":"no current reactive Owner found","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"leptos/src/provider.rs","lineNumber":41,"sourceCode":"///             // correctly gets 2 from context\n///             {use_context::<u8>().unwrap_or(0)}\n///         </Provider>\n///         // does not find any u8 in context\n///         {use_context::<u8>().unwrap_or(0)}\n///     }\n/// }\n/// ```\npub fn Provider<T, Chil>(\n    /// The value to be provided via context.\n    value: T,\n    children: TypedChildren<Chil>,\n) -> impl IntoView\nwhere\n    T: Send + Sync + 'static,\n    Chil: IntoView + 'static,\n{\n    let owner = Owner::current()\n        .expect(\"no current reactive Owner found\")\n        .child();\n    let children = children.into_inner();\n    let children = owner.with(|| {\n        provide_context(value);\n        children()\n    });\n    OwnedView::new_with_owner(children, owner)\n}\n","sourceCodeStart":23,"sourceCodeEnd":50,"githubUrl":"https://github.com/leptos-rs/leptos/blob/32d20f6c9d517451d77beb68d88c7716823dac41/leptos/src/provider.rs#L23-L50","documentation":"<Provider value=T> must read the current reactive Owner to create a child owner in which the context value is provided. The panic means Owner::current() was None when Provider was constructed — i.e. the component was built outside any reactive scope, so the provided context would have nowhere to live.","triggerScenarios":"Building a view containing <Provider/> outside mount_to/create_effect; calling the Provider render function manually from a plain function, thread, or async task with no owner; tests that build the view without a runtime scope.","commonSituations":"Wrapping app view construction in helper functions invoked outside mount; generating views in tests without run_scope; calling component functions during startup before the reactive system initializes.","solutions":["Render <Provider/> inside a reactive root (mount_to / run_scope / inside another component's view closure).","Wrap manual view construction with create_owner().with(|| ...).","In tests, build views via leptos::run_scope(|cx| view!{...}) instead of calling components directly.","Don't invoke component render functions from spawned tasks/threads; pass data instead."],"exampleFix":"// before\nlet view = view! { <Provider value=x>...</Provider> }; // outside any scope\n// after\nleptos::run_scope(|cx| view! { <Provider value=x>...</Provider> });\n","handlingStrategy":"validation","validationCode":"if leptos::Owner::current().is_none() {\n    panic!(\"<Provider/> requires a reactive owner; render inside mount_to/run_scope\");\n}\n","typeGuard":"fn in_reactive_scope() -> bool { leptos::Owner::current().is_some() }\n","tryCatchPattern":null,"preventionTips":["Nest Provider inside your app root mounted via mount_to","Wrap manual view construction in create_owner().with(...)","Build test views with run_scope, not direct component calls"],"tags":["leptos","reactive-owner","context","panics"],"backgroundTag":"missing-reactive-owner","analyzedSha":"32d20f6c9d517451d77beb68d88c7716823dac41","analyzedAt":"2026-09-01T18:55:42.580Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-09T01:17:15.007Z"}