Error message after deleting content type (i18n)

Hi,
I got this errors after removing content type:

Notice: Trying to get property of non-object in i18n_string_metatag_config_delete() (line 2986 from sites/all/modules/metatag/metatag.module).
Notice: Trying to get property of non-object in i18n_string_metatag_config_delete() (line 2987 from sites/all/modules/metatag/metatag.module).
Warning: Invalid argument supplied for foreach() in metatag_translations_delete() (line 2944 from sites/all/modules/metatag/metatag.module).