Object of class phpbb\log\log could not be converted to string

When posting or previewing any text on a fresh installation,the s9e text formatter throws the following stacktrace:

{{ContextErrorException in Configurator.php line 5223:
Catchable Fatal Error: Object of class phpbb\log\log could not be converted to string

at PHP->getRenderer(object(Rendering)) in Configurator.php line 5465
at Rendering->getRenderer() in Configurator.php line 93
at Configurator->finalize() in factory.php line 392
at factory->regenerate() in renderer.php line 97
at renderer->__construct(object(file), './cache/development/', '_text_formatter_renderer', object(factory), object(dispatcher)) in container_4335734bbdd20f586549a504dff5f80c.php line 3168
at phpbb_cache_container->getTextFormatter_S9e_RendererService() in Container.php line 297
at Container->get('text_formatter.s9e.renderer', '2') in ContainerBuilder.php line 446
at ContainerBuilder->get('text_formatter.renderer') in functions_content.php line 584
at generate_text_for_display('<t>...</t>', '1c7bz8ha', '', '2', true) in viewtopic.php line 1658
}}