Error message

• Notice: Undefined index: und in blocks_mrc_node_img() (line 102 of /var/www/html/sites/all/modules/custom/blocks_mrc/blocks_mrc.module).
• Notice: Trying to get property 'field_image' of non-object in blocks_mrc_cat_img() (line 43 of /var/www/html/sites/all/modules/custom/blocks_mrc/blocks_mrc.module).
• Warning: array_flip(): Can only flip STRING and INTEGER values! in DrupalDefaultEntityController->load() (line 175 of /var/www/html/includes/entity.inc).
• Notice: Trying to get property 'uri' of non-object in blocks_mrc_node_img() (line 115 of /var/www/html/sites/all/modules/custom/blocks_mrc/blocks_mrc.module).
• Notice: Array to string conversion in drupal_attributes() (line 2455 of /var/www/html/includes/common.inc).
• Notice: Trying to get property 'vid' of non-object in i18n_taxonomy_localize_terms() (line 1026 of /var/www/html/sites/all/modules/contrib/i18n/i18n_taxonomy/i18n_taxonomy.module).
• Warning: array_flip(): Can only flip STRING and INTEGER values! in DrupalDefaultEntityController->load() (line 175 of /var/www/html/includes/entity.inc).
• Warning: array_flip(): Can only flip STRING and INTEGER values! in DrupalDefaultEntityController->cacheGet() (line 388 of /var/www/html/includes/entity.inc).
• Notice: Trying to get property 'name' of non-object in cats_mrc_display_recommended_cur_cat_articles() (line 135 of /var/www/html/sites/all/modules/custom/cats_mrc/cats_mrc.module).