No save handlers found for the URL

[raghu20ram]

Hi , I have been trying to run the tff server. I facing the below issue can anyone please help me out.

(node:19400) UnhandledPromiseRejectionWarning: Error: Cannot find any save handlers for URL 'file://D:Projects/1554387814204'
warning.js:18
    at new ValueError (D:\Projects\tff_server\node_modules\@tensorflow\tfjs-layers\dist\errors.js:36:28)
        at Model.<anonymous> (D:\Projects\tff_server\node_modules\@tensorflow\tfjs-layers\dist\engine\training.js:1161:39)
    at step (D:\Projects\tff_server\node_modules\@tensorflow\tfjs-layers\dist\engine\training.js:42:23)
    at Object.next (D:\Projects\tff_server\node_modules\@tensorflow\tfjs-layers\dist\engine\training.js:23:53)
    at D:\Projects\tff_server\node_modules\@tensorflow\tfjs-layers\dist\engine\training.js:17:71
    at new Promise (<anonymous>)
    at __awaiter (D:\Projects\tff_server\node_modules\@tensorflow\tfjs-layers\dist\engine\training.js:13:12)
    at Model.save (D:\Projects\tff_server\node_modules\@tensorflow\tfjs-layers\dist\engine\training.js:1153:16)
    at FederatedServerTfModel.<anonymous> (d:\Projects\tff_server\federated-learning-server\models.ts:111:22)
    at step (D:\Projects\tff_server\federated-learning-server\dist\models.js:42:23)
(node:19400) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)
warning.js:18
(node:19400) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
warning.js:18