2: Class __PHP_Incomplete_Class has no unserializer in /srdb/srdb.class.php on line 735

[damiencarbery]

Using version 3.1 on PHP 5.5.38.
When I run dry or live run it reports:
2: Class __PHP_Incomplete_Class has no unserializer in /srdb/srdb.class.php on line 735

This line is in recursive_unserialize_replace() function.

As far as I can tell the changes are still correctly made.

I am happy to help debug this issue.

[mbiebusch]

I had the same problem running PHP as a FPM application with Apache. Changing the version of PHP did not work out for me (tried 5.5 and 5.6). Switching to FPM with nginx (coincidentally both are installed on my server) and PHP 5.6 solved the problem. Maybe switching to FastCGI might work, too.

[Luckyfella73]

@damiencarbery

this issue has already been discussed here:
#165

I guess you tried to replace a Wordpress DB and have yoast seo plugin installed?
I had the same problem and was able to solve it by disabling xml sitemaps in yoast options in the WP backend. Export your database after disabling and try again.

[celorodovalho]

I have the same problem!

[fadupla]

@Luckyfella73 thank you very much ! It worked like a charm !

[khejduk]

I have this issue, but I do not have Yoast installed.

[devrap]

I have this issue even after disabling Yoast site indexing and the entire Yoast plugin.

[zoot]

Similar scenario here. Even when excluding the Yoast tables, the above error is thrown. If only there was a clearer reason for the issue, to lead one towards an obvious solution, rather than suggested workarounds which make no sense.

[dhaupin]

The error is not in the Yoast tables, its in the wp_options table or anywhere else the WPSEO_Sitemap_Cache_Data serialization occurs. Do a search for that and it should show handfuls of rows.

So, first goto Yoast XML Sitemap setting, and totally disable them. This should wipe out those caches. Try running the find replace DRY RUN again and the errors should disappear. If it works, don't forget to re-eable Yoast sitemaps.

Additionally, when doing F&R don't forget that these rows use escaped serialization, ie https:\/\/example.com. Have fun!

[Mte90]

Any updates for this one?

[buckmanhands]

Thanks @dhaupin - this works exactly as you describe it if you have the Yoast!

[jhume]

I had this problem on a Drupal 8 database and resolved it by omitting the following tables:

• All tables beginning with cache
• router
• key_value

Also note that if you proceed to a live run without omitting those tables it wrecks the serialised data in those tables and your site will break.

[Franz333]

Hello guys,

I also have that problem with 2: Class __PHP_Incomplete_Class has no unserializer

I have deactivated the Yoast XML Sitemap but it doesn't help.

In some articles people speak about default settings of yoast but there is no button "Restore to default"..

I don't want to risk running the script with that error..

Anyone found a solution ever since?

Thanks a lot

[Luckyfella73]

@Franz333 Are you sure you saved the Yoast settings after disabling XML sitemap and did a new DB dump after that? Beeing in a hurry it happens to skip one of the steps - happened to me once at least ;)

[fadupla]

Hello @Franz333
Even if you don't select the yoast tables with a dry test you have this error ?