No such command 'mounter' on MacOS 26 developer beta 4

I am currently using macOS 26 Developer Beta 4 to develop my app, and I’m also using the same Mac for phone development.

I have done my best to use the Xcode beta’s Python located at /Applications/Xcode-beta.app/Contents/Developer/usr/bin/python3 to install the required versions of pymobiledevice3==2.30.0 and construct==2.10.69. Although Xcode’s Python is version 3.9.6, I encounter errors such as:

The process 'altjit' failed with code 1. 
The process 'python3' failed with code 2. 
Error: No such command 'mounter'.

Initially, I faced the error:
The process 'altjit' failed with code 1. ❌ Unable to mount personalized Developer Disk.
However, I haven’t encountered this specific error again. But when I try to enable JIT on Windows, the issue "The process 'altjit' failed with code 1. ❌ Unable to mount personalized Developer Disk" reappears.
I have tried installing earlier versions of both pymobiledevice3 and Xcode, but I still can’t resolve the issue.
who can help meeeeeeeeeeeeeeeeeee

Start by reproducing the failure on macOS 26 Developer Beta 4 using the Xcode Python path and the reported pymobiledevice3 and construct versions. Trace the altjit invocation and the missing mounter command; done means identifying whether the failure is in the environment or AltStore workflow and documenting a confirmed resolution.