Added support for Python 3.14

HISTORY.rst

@@ -22,6 +22,7 @@ test-driven methodologies, and modern toolchains for unrivaled success.
 6.1.19 (2025-??-??)
 ~~~~~~~~~~~~~~~~~~~
 
+* Added support for Python 3.14
 * Fixed a regression issue where custom build flags were not properly reflected in the `compile_commands.json <https://docs.platformio.org/en/latest/integration/compile_commands.html>`__ file, ensuring accurate compilation database generation
 * Fixed an issue where fully-qualified serial port URLs (e.g., ``rfc2217://host:port``) were incorrectly treated as wildcard patterns (`issue #5225 <https://github.com/platformio/platformio-core/issues/5225>`_)
 

platformio/debug/cli.py

@@ -167,7 +167,10 @@ def _configure(
 
 
 def _run(project_dir, debug_config, client_extra_args):
-    loop = asyncio.ProactorEventLoop() if IS_WINDOWS else asyncio.get_event_loop()
+    try:
+        loop = asyncio.ProactorEventLoop() if IS_WINDOWS else asyncio.get_event_loop()
+    except RuntimeError:
+        loop = asyncio.new_event_loop()
     asyncio.set_event_loop(loop)
 
     client = GDBClientProcess(project_dir, debug_config)