Thank you all for your continued patience with me.

Since the past two updates, I keep getting the following error:

Notice: unserialize(): Error at offset 0 of 8 bytes in Civi\Core\SettingsBag->loadValues() (line 153 of /home/[usrpath]/public_html/[sitedirectory]/sites/all/modules/civicrm/Civi/Core/SettingsBag.php).

I know this is related to a mySQL database problem, but for the life of me I cannot figure this out.

I am running CiviCRM 4.7.14 on Drupal 7.52

Thank you again

1 Answer 1


This line reads the data from the table civicrm_setting and specifically the column value. You could use a SQL client to run the query:

SELECT id, name, value FROM civicrm_setting;

Typical values would look these:

  • NULL
  • i:0; (an integer)
  • b:1; (a boolean?)
  • s:20:"CRM/common/fatal.tpl"; (a string)
  • a:1:{s:3:"key";s:5:"value";} (an array or dictionary)

Skim them and see if one of the values looks to have a different/unexpected format.

(UPDATE) Seamus Lee pointed me to https://www.drupal.org/node/1114304 which uses a clever technique for finding badly serialized data. Take the error message (Error at offset 0 of 8 bytes) and note the length (8 bytes). Search on that:

SELECT id, name, value FROM civicrm_setting WHERE length(value) = 8;
  • All but 3 entries are in the format of s:1:"3"; where the number in quotes varies. There are 2 entries where instead of a number in quotes there is a comma, and one where there is a period/dot. Other than that they are all the same:
    – Rod W
    Commented Dec 18, 2016 at 0:16
  • id name value 17 max_attachments s:1:"3"; 18 contact_undelete s:1:"1"; 19 empoweredBy s:1:"0"; 20 logging s:1:"1"; 21 maxFileSize s:1:"3"; 22 doNotAttachPDFReceipt s:1:"1"; 23 secondDegRelPermissions s:1:"0"; 24 checksum_timeout s:1:"7"; 31 dedupe_default_limit s:1:"0"; 32 remote_profile_submissions s:1:"0";
    – Rod W
    Commented Dec 18, 2016 at 0:24
  • 40 fieldSeparator s:1:","; <---- comma 41 inheritLocale s:1:"0"; 44 monetaryThousandSeparator s:1:","; <---- comma 45 monetaryDecimalPoint s:1:"."; <---- period/dot 58 contact_smart_group_display s:1:"1"; 72 hideCountryMailingLabels s:1:"1"; 83 enable_innodb_fts s:1:"0"; 84 includeWildCardInName s:1:"1";
    – Rod W
    Commented Dec 18, 2016 at 0:25
  • 85 includeEmailInName s:1:"1"; 86 includeNickNameInName s:1:"0"; 87 includeAlphabeticalPager s:1:"1"; 88 includeOrderByClause s:1:"1"; 89 smartGroupCacheTimeout s:1:"5";
    – Rod W
    Commented Dec 18, 2016 at 0:25
  • This editor makes me crazy. Pressing enter (when trying to add a new line adds the comment and I don't have permissions to edit my own comments! Also, The comments do not seem to honor a carriage return so the list is not at all helpful. Not sure how to set this up so people can actually make sense of the return results.
    – Rod W
    Commented Dec 18, 2016 at 0:27

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