Problem with upgrading to OJS 3.3.0.3

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Hello, thank you. I have used: php -d memory_limit=800M tools/upgrade.php upgrade

ERROR: Upgrade failed: DB: SQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint (SQL: alter table submission_file_revisions add constraint submission_file_revisions_submission_file_id_foreign foreign key (submission_file_id) references submission_files (submission_file_id))

OK after this message I reed the forum and found it should be an issue due to the MyISAM format of the tables, there should be InnoDB.

  1. I made a fresh copy of the production database by phpMyAdmin

  2. I checked the table status.

SHOW TABLE STATUS FROM pzjr_journal1upgrade3303;

I found all of my tables are in MyISAM form (…because we are using our database from 2007)
I decided to change the status of the problematic table:

ALTER TABLE submission_files ENGINE = InnoDB;

  1. I have opened the terminal, log-in to the server, moved to the upgrade folder and run the following command: php -d memory_limit=800M ./tools/upgrade.php upgrade

Upgraded successfully from 3.2.1.4 to 3.3.0.3.

After the upgrade, I have found one problem:

HTML galleys generated from XML JATS files are not loaded by eLens viewer

Error during loading. Please try again.

image

Please, how to solve this issue?

This is the Error log:
28-Feb-2021 09:43:29 America/Chicago] PHP Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 1267 Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation ‘=’ in /home1/pzjr/public_html/potravinarstvo/upgrade3303/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:78
Stack trace:
#0 /home1/pzjr/public_html/potravinarstvo/upgrade3303/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(78): PDO->prepare(‘SELECT\ti.*\n\t\t\tF…’, Array)
#1 /home1/pzjr/public_html/potravinarstvo/upgrade3303/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(361): Doctrine\DBAL\Driver\PDOConnection->prepare(Object(Illuminate\Database\Query\Expression))
#2 /home1/pzjr/public_html/potravinarstvo/upgrade3303/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(664): Illuminate\Database\Connection->Illuminate\Database{closure}(Object(Illuminate\Database\Query\Expression), Array)
#3 /home1/pzjr/public_html/potravinarstvo/upgrade3303/lib in /home1/pzjr/public_html/potravinarstvo/upgrade3303/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671