After some conversion restarts and page refreshes, conversion advanced bit by bit (I read that the prev error is because of slow systems or servers) but now I have the error fixed on the error message below. I refreshed several times the page, no progress at all...
ucp.php?i=pm&mode=compose&action=reply&f=0&p=2076886
Information
General Error:
SQL ERROR [ mysql4 ]
Table 'marzmif4_mwpforum2017.phpbb_userconv' doesn't exist [1146]
SQL
SELECT username_clean FROM phpbb_userconv GROUP BY username_clean HAVING COUNT(user_id) > 1
in file /home/marzmif4/public_html/WildPlants/forum_new/phpbb/db/driver/driver.php on line 999
BACKTRACE
FILE: (not given by php)
LINE: (not given by php)
CALL: installer_msg_handler()
FILE: [ROOT]/phpbb/db/driver/driver.php
LINE: 999
CALL: trigger_error()
FILE: [ROOT]/phpbb/db/driver/mysql.php
LINE: 191
CALL: phpbb\db\driver\driver->sql_error()
FILE: [ROOT]/install/convertors/functions_phpbb20.php
LINE: 1853
CALL: phpbb\db\driver\mysql->sql_query()
FILE: [ROOT]/install/convert/convertor.php(539) : eval()'d code
LINE: 1
CALL: phpbb_check_username_collisions()
FILE: [ROOT]/install/convert/convertor.php
LINE: 539
CALL: eval()
FILE: [ROOT]/install/convert/controller/convertor.php
LINE: 370
CALL: phpbb\convert\convertor->convert_data()
FILE: (not given by php)
LINE: (not given by php)
CALL: phpbb\convert\controller\convertor->convert()
FILE: [ROOT]/vendor/symfony/http-kernel/HttpKernel.php
LINE: 144
CALL: call_user_func_array()
FILE: [ROOT]/vendor/symfony/http-kernel/HttpKernel.php
LINE: 64
CALL: Symfony\Component\HttpKernel\HttpKernel->handleRaw()
FILE: [ROOT]/install/app.php
LINE: 61
CALL: Symfony\Component\HttpKernel\HttpKernel->handle()