F fix array check

Summary

Previously, an exception would be raised if a cell in the imported table contained a list.

Test Environment

How to set up a test environment for manual testing?

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src/caosadvancedtools/table_importer.py

@@ -388,7 +388,8 @@ class TableImporter():
                 if key not in df.columns:
                     continue
 
-                if pd.isnull(row.loc[key]):
+                null_check = pd.isnull(row.loc[key])
+                if (isinstance(null_check, np.ndarray) and null_check.any()) or (not isinstance(null_check, np.ndarray) and null_check):
                     errmsg = (
                         "Required information is missing ({}) in {}. row"
                         " (without header) of "