Solver: Mage: Fix empty HS error and space in input param.

src/Solver/CommandLine.py

@@ -148,7 +148,7 @@ class CommandLineSolver(AbstractSolver):
         """
         cmd = cmd.replace("@install_dir", self._install_dir())
         cmd = cmd.replace("@path", "\"" + path + "\"")
-        cmd = cmd.replace("@input", self.input_param())
+        cmd = cmd.replace("@input", self.input_param().replace(" ", "_"))
         cmd = cmd.replace("@output", self.output_param())
         cmd = cmd.replace("@dir", self._process.workingDirectory())
         cmd = cmd.replace("@args", " ".join(self.cmd_args(study)))

src/Solver/Mage.py

@@ -462,6 +462,9 @@ class Mage(CommandLineSolver):
             files.append(f"{name}.SIN")
 
             for hs in hydraulic_structures:
+                if hs.input_reach is None:
+                    continue
+
                 if not hs.input_reach.is_enable():
                     continue