Error message

• Notice: Trying to access array offset on value of type int in element_children() (line 6618 of /data/sites/web/stagingniquitinse/old_www/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6618 of /data/sites/web/stagingniquitinse/old_www/includes/common.inc).
• Deprecated function: strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior in _google_tag_status_check() (line 321 of /data/sites/web/stagingniquitinse/old_www/sites/all/modules/contrib/google_tag/google_tag.module).
• Deprecated function: implode(): Passing glue string after array is deprecated. Swap the parameters in drupal_get_feeds() (line 394 of /data/sites/web/stagingniquitinse/old_www/includes/common.inc).