Please use English in next time for your comments. Because we don't know another languages.
For your question, have you try deactivate all plugins and try it again? After it work, let's enable each plugin to check what's plugin caused this issue. Seem you have a plugin caused this issue.
Buen día.
Tengo problemas con el plugin visual composer, no me aparece en el editor cuando quiero crear una entrada.
Hi,
Please use English in next time for your comments. Because we don't know another languages.
For your question, have you try deactivate all plugins and try it again? After it work, let's enable each plugin to check what's plugin caused this issue. Seem you have a plugin caused this issue.
Best Regards,
PenciDesign