Internal unknown error (415), try 'jack-diagnose' or see Jack server log
ps: illegal argument: -ousage: ps [-AaCcEefhjlMmrSTvwXx] [-O fmt | -o fmt] [-G gid[,gid...]][-g grp[,grp...]] [-u [uid,uid...]][-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]ps [-L]Port 8073 is used by another process (pid=), please ensure to free the port or change port configuration in '/Users/grenyaz/.jack-settings' and '/Users/user/.jack-server/config.properties'ps: illegal argument: -ousage: ps [-AaCcEefhjlMmrSTvwXx] [-O fmt | -o fmt] [-G gid[,gid...]][-g grp[,grp...]] [-u [uid,uid...]][-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]ps [-L]Port 8072 is used by another process (pid=), please ensure to free the port or change port configuration in '/Users/user/.jack-settings' and '/Users/user/.jack-server/config.properties'
$ lsof -n -i:8073 | grep LISTENjava 70963 user 13u IPv6 0xd32bb4a6a5b6116b 0t0 TCP 127.0.0.1:8073 (LISTEN)$ lsof -n -i:8072 | grep LISTENjava 70963 user 11u IPv6 0xd32bb4a6a5b616ab 0t0 TCP 127.0.0.1:8072 (LISTEN)
16:14:44.181: WARNING: com.android.jack.server.router.ErrorContainer: Unknown request: 'POST /jack HTTP/1.1Host: localhost:8072User-Agent: curl/7.56.0Accept: application/vnd.jack.command-out;version=1;charset=UTF-8Content-Length: 800Content-Type: multipart/form-data; boundary=------------------------9507228002c18ced'
curl 7.56.0 (x86_64-apple-darwin16.7.0) libcurl/7.56.0 OpenSSL/1.0.2l zlib/1.2.11Release-Date: 2017-10-04Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftpFeatures: AsynchDNS IPv6 Largefile NTLM NTLM_WB SSL libz TLS-SRP UnixSockets HTTPS-proxy
EDIT: after a make clean, i'm getting the error again...
error: failed to commit transaction (conflicting files)
curl: /usr/lib/libcurl.so.4.4.0 exists in filesystem
Errors occurred, no packages were upgraded.
# pacman -U /var/cache/pacman/pkg/curl-7.55.1-2-x86_64.pkg.tar.xz /var/cache/pacman/pkg/lib32-curl-7.54.1-2-x86_64.pkg.tar.xz /var/cache/pacman/pkg/libcurl-compat-7.54.1-1-x86_64.pkg.tar.xz
The above fixed it for me. You might want to add them to the pacman.conf as detailed at the Arch Wiki, until whatever issue is causing it is resolved.