fixed reset warning

added handling for file not found

pyfan.py

@@ -58,8 +58,8 @@ class ThermalZone:
                 else:
                     write_sysfs(target_fan, int(val))
         except OSError as err:
-            logging.getLogger("pyfan").warning("[%s] Failed to set pwm, trying to reset it. (%s)" % self.name,
-                                               err.strerror)
+            logging.getLogger("pyfan").warning(
+                "[%s] Failed to set pwm, trying to reset it. (%s)" % (self.name, err.strerror))
             self.setup_pwm(1)
 
         p, i, d = self.pid.components
@@ -78,10 +78,14 @@ class ThermalZone:
 
     def setup_pwm(self, value=1):
         for target_fan in self.fans:
+            try:
                 if type(target_fan) is dict:
                     set_pwm_mode(list(target_fan.keys())[0], value)
                 else:
                     set_pwm_mode(target_fan, value)
+            except FileNotFoundError as err:
+                logging.getLogger("pyfan").warning("[%s] pwm not found. Not ready yet or wrong path? (%s)" % self.name,
+                                                   err.strerror)
 
 
 class PyFan: