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Installation Moodle 3.4 SQL execution error

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by Uyghur Maarip.  

During my installation, I can't finish it:


It says: (Your server environment meets all minimum requirements) and I click CONTINUE and get these informations:


DDL sql execution error

.....

here comes alot of DB data (my databasename, username and password are correct)

.....

Last informations are:

Debug info: Specified key was too long; max key length is 767 bytes

Error code: ddlexecuteerror

Stack trace:

  • line 492 of /lib/dml/moodle_database.php: ddl_change_structure_exception thrown
  • line 1041 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
  • line 77 of /lib/ddl/database_manager.php: call to mysqli_native_moodle_database->change_database_structure()
  • line 425 of /lib/ddl/database_manager.php: call to database_manager->execute_sql_arr()
  • line 370 of /lib/ddl/database_manager.php: call to database_manager->install_from_xmldb_structure()
  • line 1723 of /lib/upgradelib.php: call to database_manager->install_from_xmldb_file()
  • line 276 of /admin/index.php: call to install_core()


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