Update J!2.5.28 to 3.4.1 (with known problems).

After applying patch from
#30
(Thanks for it!)

and actvating Versioning in Weblinks > Options we have an SQL error while saving a weblink.

"
Error

Save failed with the following error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND sha1_hash = '093f558adc1ca35ced94ba8xyz'' LIMIT 0, 1' at line 3 SQL=SELECT * FROM xxxx_ucm_history WHERE ucm_item_id = 9 AND ucm_type_id = AND sha1_hash = '093f558adc1ca35ced94ba8xyz' LIMIT 0, 1
"

Error is here (no ucm_type_id)

AND `ucm_type_id` = AND `sha1_hash`

/libraries/cms/table/contenthistory.php