Catch REST crash (#2029)

* Catch REST crash

#2027

* [pre-commit.ci lite] apply automatic fixes

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Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>

apps/predbat/inverter.py

@@ -843,7 +843,7 @@ def update_status(self, minutes_now, quiet=False):
         self.charge_rate_now = max(self.charge_rate_now * self.base.battery_rate_max_scaling, self.battery_rate_min)
         self.discharge_rate_now = max(self.discharge_rate_now * self.base.battery_rate_max_scaling_discharge, self.battery_rate_min)
 
-        if self.rest_data:
+        if self.rest_data and self.rest_data.get("Power", {}).get("Power", {}).get("SOC_kWh", None) is not None:
             self.soc_kw = dp3(self.rest_data["Power"]["Power"]["SOC_kWh"] * self.battery_scaling)
         else:
             if "soc_percent" in self.base.args: