Hello! I've tried to update my site from 3.6.5 version to 3.7.0 (and even 3.8.2) but I get errors (you may find them below) on the Database. Clicking 'fix' won't help, as another error occurs ('1709 Index column size too large. The maximum column size is 767 bytes.').
The errors of the Database are:


Database schema version (3.6.3-2016-08-16) does not match CMS version (3.7.0-2017-04-19).
Table 'd7ybc_ucm_content' does not have column 'core_title' with type varchar(400). (From file 3.7.0-2017-01-08.sql.)
Table 'd7ybc_ucm_content' does not have column 'core_alias' with type varchar(400). (From file 3.7.0-2017-01-08.sql.)
Table 'd7ybc_contact_details' does not have column 'alias' with type varchar(400). (From file 3.7.0-2017-02-17.sql.)
Table 'd7ybc_contact_details' does not have column 'language' with type varchar(7). (From file 3.7.0-2017-02-17.sql.)
Table 'd7ybc_languages' does not have column 'asset_id' with type int(10) unsigned. (From file 3.7.0-2017-03-03.sql.)
Table 'd7ybc_menu_types' does not have column 'asset_id' with type int(10) unsigned. (From file 3.7.0-2017-03-03.sql.)
Table 'd7ybc_finder_links' does not have column 'description' with type text;. (From file 3.7.0-2017-03-19.sql.)


Could you please help me out, as I need to proceed?

Thank you in advance,
Nadia