Fix PermissionError when checking template paths on shared filesystems #2252
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Handle PermissionError that can occur when calling Path.exists() on template paths in _get_conf(). This issue can happen sporadically on shared/distributed filesystems (e.g., CephFS, NFS) due to: - Transient permission errors during metadata operations - Metadata cache coherency operations - Concurrent access to shared directories The fix mirrors the existing PermissionError handling in _template_paths() (lines 576-577 and 584-585) by wrapping the exists() check in a try/except block to gracefully skip paths that cannot be accessed. This resolves sporadic failures when running jupyter nbconvert in environments where JUPYTER_PATH contains shared filesystem directories.
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Handle PermissionError that can occur when calling Path.exists() on template paths in _get_conf(). This issue can happen sporadically on shared/distributed filesystems (e.g., CephFS, NFS) due to:
The fix mirrors the existing PermissionError handling in _template_paths() (lines 576-577 and 584-585) by wrapping the exists() check in a try/except block to gracefully skip paths that cannot be accessed.
This resolves sporadic failures when running jupyter nbconvert in environments where JUPYTER_PATH contains shared filesystem directories.