  Recently signatures of superconductivity were observed close to 80 K in \LN\
under pressure. This discovery positions \LN\ as the first bulk nickelate with
high-temperature superconductivity, but the lack of zero resistance presents a
significant drawback for validating the findings. Here we report pressure
measurements up to over 30 GPa using a liquid pressure medium and show that
single crystals of \LNO\ do exhibit zero resistance. We find that \LNO\ remains
metallic under applied pressures, suggesting the absence of a metal-insulator
transition proximate to the superconductivity. Analysis of the normal state
$T$-linear resistance suggests an intricate link between this strange metal
behaviour and superconductivity, whereby at high pressures both the linear
resistance coefficient and superconducting transition are slowly suppressed by
pressure, while at intermediate pressures both the superconductivity and
strange metal behaviour appear disrupted, possibly due to a nearby structural
instability. The association between strange metal behaviour and
high-temperature superconductivity is very much in line with diverse classes of
unconventional superconductors, including the cuprates and Fe-based
superconductors. Understanding the superconductivity of \LNO\ evidently
requires further revealing the interplay of strange metal behaviour,
superconductivity, as well as possible competing electronic or structural
phases.
