ERROR [Better Auth]: State not found undefined

As noted above, I forgot to include the query string when re-constructing the URL.
 
In the fastify example (https://www.better-auth.com/docs/integrations/fastify) they do:

const url = new URL(request.url, `http://${request.headers.host}`);


For my framework (which is uwebsockets based) the req.getUrl() method doesn't include the query string (the part after '?'), I had to get that separately from req.getQuery() and append it to the url as the input to the new URL call 

As noted above, I forgot to include the query string when re-constructing the URL.
 
In the fastify example (https://www.better-auth.com/docs/integrations/fastify) they do:

const url = new URL(request.url, `http://${request.headers.host}`);


For my framework (which is uwebsockets based) the req.getUrl() method doesn't include the query string (the part after '?'), I had to get that separately from req.getQuery() and append it to the url as the input to the new URL call