Here are some most popular problems, that you may have during installation: installation process hangs on “Create database”, “Create default setting” or second step hangs at 0%.
Depending on what you have in minthcm.log, php.log or install.log, you should check these articles to find answers.
https://stackoverflow.com/questions/42361270/how-to-fix-call-to-undefined-function-symfony-polyfill-mbstring-iconv-strpos-i
https://stackoverflow.com/questions/49095673/mysql-change-charset-collation-prevented-by-error-1071-specified-key-was-too
.
.