Import stucks at 0% for database

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Hello!
I have followed the various tasks on the troubleshooting guide and I have still problems to import the DB into Hostingers WordPress website. It stucks at 0% and doesn’t end.
Now at the end, I have set all max_size values in .htaccess to the 2.5 times of the backup file and the execution time to infinite. I made sure, that I use the same PHP version on the target system as on the source system. I cleaned up the source DB with WP-Optimize. I see in phpMyAdmin, that the database is filled with tables from the source system, but it looks like the import stops at a certain point. From the error log, I see below errors.

Nov 27 2023 11:01:06
{"type":2,"message":"Attempt to read property \"data\" on null","file":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-content\/plugins\/hostinger\/includes\/surveys\/Rest\/class-hostinger-surveys-rest.php","line":67} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:08
{"Number":8192,"Message":"rtrim(): Passing null to parameter #1 ($string) of type string is deprecated","File":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/formatting.php","Line":2831} Nov 27 2023 11:01:09
{"type":1,"message":"Uncaught TypeError: Cannot assign null to property mysqli_result::$current_field of type int in \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database-utility.php:83\nStack trace:\n#0 \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database-utility.php(83): unserialize()\n#1 \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database.php(1670): Ai1wm_Database_Utility::replace_serialized_values()\n#2 [internal function]: Ai1wm_Database->replace_table_values_callback()\n#3 \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database.php(1582): preg_replace_callback()\n#4 \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database.php(1089): Ai1wm_Database->replace_table_values()\n#5 \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/model\/import\/class-ai1wm-import-database.php(978): Ai1wm_Database->import()\n#6 \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/controller\/class-ai1wm-import-controller.php(73): Ai1wm_Import_Database::execute()\n#7 \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/class-wp-hook.php(324): Ai1wm_Import_Controller::import()\n#8 \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/class-wp-hook.php(348): WP_Hook->apply_filters()\n#9 \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-includes\/plugin.php(517): WP_Hook->do_action()\n#10 \/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-admin\/admin-ajax.php(188): do_action()\n#11 {main}\n thrown","file":"\/home\/u499230116\/domains\/phinternet.de\/public_html\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database-utility.php","line":83}

Any idea, how I could solve this issue?

Cheers Peter

 

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