@solana/kit · RPC subscriptions (WebSocket)
Solana error #8190000
RPC_SUBSCRIPTIONS__CANNOT_CREATE_SUBSCRIPTION_PLAN
Appears as Solana error #8190000; Decode this error by running `npx @solana/errors decode -- 8190000 '…'`
Message
The notification name must end in 'Notifications' and the API must supply a subscription plan creator function for the notification '$notificationName'.
Placeholders (notificationName) are filled from the error’s context. Paste the base64 argument below to see the real values.
What it means
WebSocket connection and subscription lifecycle errors.
What to do
- Check the
wss:// URL and that the provider supports subscriptions on your plan. - Handle abort signals: subscriptions end when their
AbortSignal fires.
Decode it locally instead
npx @solana/errors decode -- 8190000 '<base64 context>'
In development, import from @solana/kit as usual and the full message is thrown. In production the message is stripped to keep bundles small; the error object still carries error.context with the same values this page decodes, and isSolanaError(err, SOLANA_ERROR__RPC_SUBSCRIPTIONS__CANNOT_CREATE_SUBSCRIPTION_PLAN) lets you branch on it.