Metasploit error on Alpine

When I trying to run ./msfconsole I got this error:

Traceback (most recent call last):
        9: from ./msfconsole:48:in `'
        8: from ./msfconsole:48:in `require'
        7: from /opt/metasploit-framework/lib/msf/core/payload_generator.rb:2:in `'
        6: from /opt/metasploit-framework/lib/msf/core/payload_generator.rb:2:in `require'
        5: from /opt/metasploit-framework/lib/msf/core/payload/apk.rb:3:in `'
        4: from /opt/metasploit-framework/lib/msf/core/payload/apk.rb:3:in `require'
        3: from /opt/metasploit-framework/lib/msf/core.rb:44:in `'
        2: from /opt/metasploit-framework/lib/msf/core.rb:44:in `require'
        1: from /opt/metasploit-framework/lib/msf/core/db_manager.rb:24:in `'
/opt/metasploit-framework/lib/msf/core/db_manager.rb:66:in ': undefined local variable or method optionally_include_metasploit_credential_creation' for Msf::DBManager:Class (NameError)

But I have installed *metasploit-credential* (gem install metasploit-credential). I use **Alpine**, version **3.2.0** architecture is **i386 musl-linux**. How can I solve this error? Thank you in advance