Error "language triggers directory not found."

When open a SQL file this error occurs:

language triggers directory not found.
Traceback (most recent call last):
  File "/home/dba/guedes/src/textflow/version-control/TextFlow/sidepanels/filebrowser.py", line 426, in double_click
    self.document_manager.open_file_tab(subfolder_dir)
  File "/home/dba/guedes/src/textflow/version-control/TextFlow/core/documentmanager.py", line 214, in open_file_tab
    self.open_tab(os.path.basename(new_file), new_file, encode)
  File "/home/dba/guedes/src/textflow/version-control/TextFlow/core/documentmanager.py", line 111, in open_tab
    view = self.__create_view(file_uri, encode)
  File "/home/dba/guedes/src/textflow/version-control/TextFlow/core/documentmanager.py", line 430, in __create_view
    self.language_manager.change_mode(language_id)
  File "/home/dba/guedes/src/textflow/version-control/TextFlow/core/languagemanager.py", line 83, in change_mode
    self.main_window.add_accel_group(self.loaded_configs[language]["accelgroup"])
KeyError: 'accelgroup'