Error message

• Notice: Trying to access array offset on value of type null in field_formatter_settings_get_instance_display_settings() (line 34 of sites/all/modules/field_formatter_settings/field_formatter_settings.module).
• Notice: Trying to access array offset on value of type null in field_formatter_settings_get_instance_display_settings() (line 34 of sites/all/modules/field_formatter_settings/field_formatter_settings.module).
• Notice: Trying to access array offset on value of type null in field_formatter_settings_get_instance_display_settings() (line 34 of sites/all/modules/field_formatter_settings/field_formatter_settings.module).
• Notice: Trying to access array offset on value of type null in field_formatter_settings_get_instance_display_settings() (line 34 of sites/all/modules/field_formatter_settings/field_formatter_settings.module).
• Notice: Trying to access array offset on value of type null in field_formatter_settings_get_instance_display_settings() (line 34 of sites/all/modules/field_formatter_settings/field_formatter_settings.module).
• Notice: Trying to access array offset on value of type null in field_formatter_settings_get_instance_display_settings() (line 34 of sites/all/modules/field_formatter_settings/field_formatter_settings.module).