Cannot change maximum upload size over 8 MB

Hi everyone,
I found some problem about max upload file size over 8 MB. An error is
"There were problems with the code integrity check." The list of invalid file as below. How can I do? Thank you.
Technical information

The following list covers which files have failed the integrity check. Please read
the previous linked documentation to learn more about the errors and how to fix


  • core
      • core/doc/admin/_sources/configuration_files/collaborative_documents_configuration.txt
      • core/fonts/LICENSE.txt

Raw output

[core] => Array
[core/doc/admin/_sources/configuration_files/collaborative_documents_configuration.txt] => Array
[expected] => 6b3111348248bdcca9a241be08fac007d66ae424936d5b552f2c0faff2828994d92b3fb3bc7074dd07f51a49c2bc622c6aebe66d7a163ee31300843bb5aa2534
[current] => 598d62c0987b8990e956aba3d9ec27f7558c705995f648b6b8d750e27239b4273541e6515f467d35658933fa08b9d8326a5f72fc1523600804e62ef07529c736

                [core/fonts/LICENSE.txt] => Array
                        [expected] => 4cc5a12bfe984c0a50bf7943e2d70a948d520ef423677c77629707aace3a95aa378d205de929105d644680679e70ef2449479b360ad44896b75bafed66613272
                        [current] => 98f6b79b778f7b0a15415bd750c3a8a097d650511cb4ec8115188e115c47053fe700f578895c097051c9bc3dfb6197c2b13a15de203273e1a3218884f86e90e8




For the upload limit, there is still a valid howto from owncloud that you can follow:

and also for the integrity checks, have you already checked the documentation: