The text you provided ( meteorclientmodfabric121jar ) is missing the "dots" required for a computer to recognize it.
The official Meteor Client releases do NOT have the word new in their filename. Official files follow a pattern like meteor-client-1.21-0.5.5.jar . Therefore, meteorclientmodfabric121jar new is likely a user-renamed file . file name meteorclientmodfabric121jar new
The source code is available on GitHub for transparency and community contributions. Key Features & Modules The text you provided ( meteorclientmodfabric121jar ) is