Well, I guess the right package was not installed; this did the trick: sudo apt-get install php7.4-mbstring . This delivered mbstring.so to ... ... <看更多>

How to Install PHP mbstring Library ... Twitter: @webpwnized Thank you for watching. Please help! Up vote ... ... <看更多>

FATAL ERROR: PHP mbstring extension is not enabled. MantisBT requires this extension for Unicode (UTF-8) ... ... <看更多>

... [oniguruma/regerror.lo] Error 1 ... Command phpbrew ext install mbstring Platform OS: Ubuntu 16.04 Running PHP: php 5.3.28 Installing PHP: ... <看更多>