debug session fails to start due to invalid buffer name

[cladera]

Debug adapter definition and debug configuration

Nvim version:

NVIM v0.9.0-dev-41-gf7b175e04
Build type: RelWithDebInfo
LuaJIT 2.1.0-beta3

Adapters installed via Mason:

    ◍ java-debug-adapter
      The debug server implementation for Java. It conforms to the debugger adapter protocol.
      
      installed version 0.45.0                                  
      homepage          https://github.com/microsoft/java-debug 
      languages         Java                                    
      categories        DAP                                     

    ◍ java-test
      The Test Runner for Java works with java-debug-adapter to provide the following features:
      - Run/Debug test cases
      - Customize test configurations
      - View test report
      - View tests in Test Explorer
      
      Enables support for the following test frameworks:
      
      - JUnit 4 (v4.8.0+)
      - JUnit 5 (v5.1.0+)
      - TestNG (v6.8.0+)
      
      installed version 0.37.1                                        
      homepage          https://github.com/microsoft/vscode-java-test 
      languages         Java                                          
      categories        DAP                                           

    ◍ node-debug2-adapter
      A debug adapter that supports debugging Node via the Chrome Debugging Protocol. No longer maintained.
      
      installed version v1.43.0                                         
      homepage          https://github.com/microsoft/vscode-node-debug2 
      languages         JavaScript, TypeScript                          
      categories        DAP                                             
      executables       node-debug2-adapter                             

Jdtls debug configuration managed via nvim-jdtls plguin.

Debug adapter version

No response

Steps to Reproduce

1. Open a Java project
2. Open a test class
3. Wait for jdtls service to be ready
4. Move the cursor to a test method
5. Run: :lua require'jdtls'.test_nearest_method()

Expected Result

A new dap session should start running nearest java test method.

Actual Result

Session start fails:

Error executing vim.schedule lua callback: ...rvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:265: Vim(append):E5248: Invalid character in group name
stack traceback:
        [C]: in function 'nvim_buf_set_name'
        ...rvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:265: in function 'handler'
        ...rvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:900: in function 'handle_body'
        ...rvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1076: in function ''
        vim/_editor.lua: in function <vim/_editor.lua:0>