Failed to load schema using introspection

[GobbaFish]

Hi, using introspection via a query to a URL, data is being returned but is failing to load
Digging into the code I can see that data is being passed to the @graphql-tools method

getSchemaFromIntrospection(introspectionResult, options)
where introspectionResult =
{"data":{"__schema":{ ...... }}}

I see that the code is looking for introspectionResult.data i.e.

function getSchemaFromIntrospection(introspectionResult, options) { var _a, _b; if ((_a = introspectionResult === null || introspectionResult === void 0 ? void 0 : introspectionResult.**data**) === null || _a === void 0 ? void 0 : _a.__schema) { return graphql.buildClientSchema(introspectionResult.data, options); } else if ((_b = introspectionResult === null || introspectionResult === void 0 ? void 0 : introspectionResult.errors) === null || _b === void 0 ? void 0 : _b.length) { console.log('introspectionResult.errors: ', introspectionResult.errors); if (introspectionResult.errors.length > 1) { const combinedError = new utils.AggregateError(introspectionResult.errors, 'Could not obtain introspection result'); throw combinedError; } const error = introspectionResult.errors[0]; throw error.originalError || error; } else { throw new Error('Could not obtain introspection result, received: ' + JSON.stringify(introspectionResult)); } }

but introspectionResult.data is undefined

Any tips on what i need to to do get it to recognise introspectionResult.data? Other graphql tools seem to recoginise the introspection result