Ignoring debug-1.7.1 because its extensions are not built

Start by reproducing the VSCode debugging-session startup on Ruby 2.7.6 and inspect the reported debug-1.7.1 and io-console-0.6.0 extension warnings. Check the gem installation or startup path involved; done means identifying a reproducible cause and confirming that the warnings no longer prevent a debugging session.

Get the following error when I try to start a new debugging session in VSCode

Ruby version is 2.7.6

Ignoring debug-1.7.1 because its extensions are not built. Try: gem pristine debug --version 1.7.1 Ignoring io-console-0.6.0 because its extensions are not built. Try: gem pristine io-console --version 0.6.0 Ignoring io-console-0.6.0 because its extensions are not built. Try: gem pristine io-console --version 0.6.0 Ignoring io-console-0.6.0 because its extensions are not built. Try: gem pristine io-console --version 0.6.0 Ignoring io-console-0.6.0 because its extensions are not built. Try: gem pristine io-console --version 0.6.0 Ignoring io-console-0.6.0 because its extensions are not built. Try: gem pristine io-console --version 0.6.0 Ignoring io-console-0.6.0 because its extensions are not built. Try: gem pristine io-console --version 0.6.0 Ignoring io-console-0.6.0 because its extensions are not built. Try: gem pristine io-console --version 0.6.0 Ignoring io-console-0.6.0 because its extensions are not built. Try: gem pristine io-console --version 0.6.0 Ignoring io-console-0.6.0 bec