when running test self.assert_write_mode() runs into errors

[Santonia27]

hydomt_fiat version checks

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• I have checked that this bug exists on the latest version of hydomt_fiat.

Reproducible Example

run any of the tests

Current behaviour

self = <hydromt_fiat.fiat.FiatModel object at 0x0000017B4B8DC160>

def write_tables(self) -> None:
    if len(self._tables) == 0:
        self.logger.debug("No table data found, skip writing.")
        return

  self._assert_write_mode()

E TypeError: 'NoneType' object is not callable

hydromt_fiat\fiat.py:1190: TypeError

Desired behaviour

fix bug

Task list

• fix bug

Additional context

No response