I develop simple chatbot using rasa framework with one actions,when i run rasa shell to interact with chatbot ,it showing this error:

Hi Team, I have developed sample rasa chatbot with action. When I try to train the bot using rasa train,getting below error. Can any one help me to solve this issue.

PS E:\RASA\RASA_2.O_Examples\custom_actions_2.O> rasa train fatal: bad revision ‘HEAD’ Traceback (most recent call last): File “c:\users\subbu\anaconda3\lib\runpy.py”, line 193, in run_module_as_main “main”, mod_spec) File “c:\users\subbu\anaconda3\lib\runpy.py”, line 85, in run_code exec(code, run_globals) File "C:\Users\subbu\Anaconda3\Scripts\rasa.exe_main.py", line 9, in File "c:\users\subbu\anaconda3\lib\site-packages\rasa_main.py", line 116, in main cmdline_arguments.func(cmdline_arguments) File “c:\users\subbu\anaconda3\lib\site-packages\rasa\cli\train.py”, line 159, in train_nlu domain=args.domain, File “c:\users\subbu\anaconda3\lib\site-packages\rasa\train.py”, line 470, in train_nlu domain=domain, File “c:\users\subbu\anaconda3\lib\site-packages\rasa\utils\common.py”, line 308, in run_in_loop result = loop.run_until_complete(f) File “c:\users\subbu\anaconda3\lib\asyncio\base_events.py”, line 584, in run_until_complete return future.result() File “c:\users\subbu\anaconda3\lib\site-packages\rasa\train.py”, line 497, in _train_nlu_async training_data = await file_importer.get_nlu_data() File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\importers\importer.py”, line 215, in get_nlu_data return await self._importer.get_nlu_data(language) File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\utils\common.py”, line 117, in decorated return await cache.cached_result() File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\importers\importer.py”, line 403, in get_nlu_data existing_nlu_data = await self._importer.get_nlu_data(language) File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\utils\common.py”, line 117, in decorated return await cache.cached_result() File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\importers\importer.py”, line 289, in get_nlu_data nlu_data = await asyncio.gather(*nlu_data) File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\importers\rasa.py”, line 58, in get_nlu_data return utils.training_data_from_paths(self._nlu_files, language) File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\importers\utils.py”, line 11, in training_data_from_paths
training_data_sets = [loading.load_data(nlu_file, language) for nlu_file in paths] File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\importers\utils.py”, line 11, in training_data_sets = [loading.load_data(nlu_file, language) for nlu_file in paths] File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\nlu\training_data\loading.py”, line 60, in load_data data_sets = [_load(f, language) for f in files] File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\nlu\training_data\loading.py”, line 60, in data_sets = [_load(f, language) for f in files] File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\nlu\training_data\loading.py”, line 112, in _load return reader.read(filename, language=language, fformat=fformat) File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\nlu\training_data\formats\readerwriter.py”, line 33, in read return self.reads(rasa.shared.utils.io.read_file(filename), **kwargs) File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\nlu\training_data\formats\rasa_yaml.py”, line 77, in reads
self.validate(string) File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\nlu\training_data\formats\rasa_yaml.py”, line 62, in validate
validation.validate_yaml_schema(string, NLU_SCHEMA_FILE) File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\utils\validation.py”, line 140, in validate_yaml_schema yaml_file_content, reader_type=[“safe”, “rt”] File “c:\users\subbu\anaconda3\lib\site-packages\rasa\shared\utils\io.py”, line 325, in read_yaml yaml_parser = yaml.YAML(typ=reader_type) File “c:\users\subbu\anaconda3\lib\site-packages\ruamel\yaml\main.py”, line 138, in init ‘typ "{}"not recognised (need to install plug-in?)’.format(self.typ) NotImplementedError: typ "[‘safe’, ‘rt’]"not recognised (need to install plug-in?) PS E:\RASA\RASA_2.O_Examples\custom_actions_2.O>

thanks, subbu.

Hi, finally I sort out this issue using below command pip install rasa-ext-plugin.