Thanks @SGS here the output of the error file, unfortunately I do not understand that:
/home/jose/.config/keepnote/error-log.txt.bak
==============================================
KeepNote 0.7.8: Tue Sep 15 20:07:39 2020
enabling extension 'notebook_http'
enabling extension 'backup_tar'
enabling extension 'new_file'
enabling extension 'editor_insert_date'
enabling extension 'command_basics'
enabling extension 'export_html'
enabling extension 'python_prompt'
enabling extension 'keepnote'
==============================================
KeepNote 0.7.8: Tue Sep 15 20:14:41 2020
** stderr - unavailable for messages - IOError: [Errno 32] TuberĂa rota
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/keepnote/gui/__init__.py", line 568, in func
notebook.load(filename, conn)
File "/usr/lib/python2.7/site-packages/keepnote/notebook/__init__.py", line 1405, in load
attr = self._conn.read_node(self._conn.get_rootid())
File "/usr/lib/python2.7/site-packages/keepnote/notebook/connection/fs/__init__.py", line 888, in get_rootid
return self._read_root()["nodeid"]
File "/usr/lib/python2.7/site-packages/keepnote/notebook/connection/fs/__init__.py", line 775, in _read_root
attr = self._read_node(None, self._filename)
File "/usr/lib/python2.7/site-packages/keepnote/notebook/connection/fs/__init__.py", line 978, in _read_node
current, mtime = self._node_index_current(nodeid, path)
File "/usr/lib/python2.7/site-packages/keepnote/notebook/connection/fs/__init__.py", line 995, in _node_index_current
index_mtime = self._index.get_node_mtime(nodeid)
File "/usr/lib/python2.7/site-packages/keepnote/notebook/connection/fs/index.py", line 311, in get_node_mtime
WHERE nodeid=?""", (nodeid,))
DatabaseError: database disk image is malformed
==============================================
KeepNote 0.7.8: Tue Sep 15 20:19:07 2020
enabling extension 'notebook_http'
enabling extension 'backup_tar'
enabling extension 'new_file'
enabling extension 'editor_insert_date'
enabling extension 'command_basics'
enabling extension 'export_html'
enabling extension 'python_prompt'
enabling extension 'keepnote'
==============================================
KeepNote 0.7.8: Tue Sep 15 20:20:07 2020
** stderr - unavailable for messages - IOError: [Errno 32] TuberĂa rota
enabling extension 'notebook_http'
enabling extension 'backup_tar'
enabling extension 'new_file'
enabling extension 'editor_insert_date'
enabling extension 'command_basics'
enabling extension 'export_html'
enabling extension 'python_prompt'
enabling extension 'keepnote'
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/keepnote/gui/__init__.py", line 568, in func
notebook.load(filename, conn)
File "/usr/lib/python2.7/site-packages/keepnote/notebook/__init__.py", line 1405, in load
attr = self._conn.read_node(self._conn.get_rootid())
File "/usr/lib/python2.7/site-packages/keepnote/notebook/connection/fs/__init__.py", line 888, in get_rootid
return self._read_root()["nodeid"]
File "/usr/lib/python2.7/site-packages/keepnote/notebook/connection/fs/__init__.py", line 775, in _read_root
attr = self._read_node(None, self._filename)
File "/usr/lib/python2.7/site-packages/keepnote/notebook/connection/fs/__init__.py", line 978, in _read_node
current, mtime = self._node_index_current(nodeid, path)
File "/usr/lib/python2.7/site-packages/keepnote/notebook/connection/fs/__init__.py", line 995, in _node_index_current
index_mtime = self._index.get_node_mtime(nodeid)
File "/usr/lib/python2.7/site-packages/keepnote/notebook/connection/fs/index.py", line 311, in get_node_mtime
WHERE nodeid=?""", (nodeid,))
DatabaseError: database disk image is malformed
==============================================
KeepNote 0.7.8: Tue Sep 15 20:36:59 2020
enabling extension 'notebook_http'
enabling extension 'backup_tar'
enabling extension 'new_file'
enabling extension 'editor_insert_date'
enabling extension 'command_basics'
enabling extension 'export_html'
enabling extension 'python_prompt'
enabling extension 'keepnote'
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/keepnote/gui/main_window.py", line 1102, in view_error_log
self._app.run_external_app("text_editor", filename2)
File "/usr/lib/python2.7/site-packages/keepnote/__init__.py", line 1044, in run_external_app
raise KeepNoteError(_("Must specify '%s' program in Helper Applications" % app.title))
KeepNoteError: Must specify 'Text Editor' program in Helper Applications
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/keepnote/gui/main_window.py", line 1102, in view_error_log
self._app.run_external_app("text_editor", filename2)
File "/usr/lib/python2.7/site-packages/keepnote/__init__.py", line 1044, in run_external_app
raise KeepNoteError(_("Must specify '%s' program in Helper Applications" % app.title))
KeepNoteError: Must specify 'Text Editor' program in Helper Applications
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/keepnote/gui/main_window.py", line 1113, in view_config_files
self._app.run_external_app("file_explorer", filename)
File "/usr/lib/python2.7/site-packages/keepnote/__init__.py", line 1044, in run_external_app
raise KeepNoteError(_("Must specify '%s' program in Helper Applications" % app.title))
KeepNoteError: Must specify 'File Explorer' program in Helper Applications