SQL: Minor change and add exception handler.

src/Model/Study.py

@@ -177,6 +177,13 @@ class Study(SQLModel):
     # SQL #
     #######
 
+    def _db_insert_into_info(self, key, value, commit=False):
+        self.execute(
+            "INSERT INTO info VALUES " +
+            f"('{key}', '{self._db_format(value)}')",
+            commit=commit
+        )
+
     def _create(self):
         # Info (metadata)
         self.execute(

src/tools.py

@@ -312,19 +312,29 @@ class SQL(object):
 
     def _db_format(self, value):
         # Replace ''' by ''' to preserve SQL injection
-        if value is str:
+        if type(value) is str:
             value = value.replace("'", "'")
         return value
 
     @timer
     def execute(self, cmd, fetch_one=True, commit=False):
         logger.debug(f"SQL - {cmd}")
+
+        value = None
+        try:
             res = self._cur.execute(cmd)
 
             if commit:
                 self._db.commit()
 
             value = self._fetch(res, fetch_one)
+        except Exception as e:
+            logger.error(
+                f"[{Fore.RED}ERROR{Style.RESET_ALL}] " +
+                f"{Fore.RED}{e}{Style.RESET_ALL}"
+            )
+            traceback.print_exc()
+        finally:
             return value
 
     def _create(self):