std::filesystem::filesystem_error - Man Page

filesystem_error (const filesystem_error &)=default
filesystem_error (const string &__what_arg, const path &__p1, const path &__p2, error_code __ec)
filesystem_error (const string &__what_arg, const path &__p1, error_code __ec)
filesystem_error (const string &__what_arg, error_code __ec)
const error_code & code () const noexcept
filesystem_error & operator= (const filesystem_error &)=default
const path & path1 () const noexcept
const path & path2 () const noexcept
const char * what () const noexcept

Returns a C-style character string describing the general cause of the current error (the same string passed to the ctor).

Reimplemented from std::runtime_error.

References std::make_error_code().