  Non-Fermi liquids are strange metals whose physical properties deviate
qualitatively from those of conventional metals due to strong quantum
fluctuations. In this paper, we report transport measurements on the
FeSe$_{1-x}$S$_x$ superconductor, which has a quantum critical point of a
nematic order without accompanying antiferromagnetism. We find that in addition
to a linear-in-temperature resistivity $\rho_{xx}\propto T$, which is close to
the Planckian limit, the Hall angle varies as $\cot \theta_{\rm H} \propto T^2$
and the low-field magnetoresistance is well scaled as
$\Delta\rho_{xx}/\rho_{xx}\propto \tan^2 \theta_{\rm H}$ in the vicinity of the
nematic quantum critical point. This set of anomalous charge transport
properties shows striking resemblance with those reported in cuprate,
iron-pnictide and heavy fermion superconductors, demonstrating that the
critical fluctuations of a nematic order with ${\bf q} \approx 0$ can also lead
to a breakdown of the Fermi liquid description.
