WINE not on path when using protontricks

[KorinFlakes]

When attempting to use protontricks to install either foss_corefonts or corefonts (protontricks 644560 foss_corefonts) I recieve this output:

[INFO] Found Steam directory at /home/user/.steam/steam. You can also define Steam directory manually using $STEAM_DIR
[INFO] Winetricks path is set to /home/user/Downloads/protontricks/winetricks
[INFO] Found proton version 3.7. You can also define the proton version manually using $PROTON_VERSION
[INFO] WINESERVER environment variable is not available Setting WINESERVER environment variable to proton bundled version
[INFO] Found 0 Steam library folders
[INFO] Found the prefix directory at /home/user/.steam/steam/steamapps/compatdata/644560/pfx
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WINE is /home/user/.steam/steam/steamapps/common/Proton 3.7/dist/bin/wine, which is neither on the path nor an executable file
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The fonts don't get installed and as a result, the game is not displaying the needed texts.
I've installed wine, winetricks and have steam setup properly to use proton.

[lucifertdark]

The newest version of Winetricks is here on Github, if you installed the one provided by your OS (like I did at first) it's probably out of date. https://github.com/Winetricks/winetricks

[Matoking]

Had this same problem and running the command manually revealed the following error message:
00b3:err:esync:esync_init Server is running with WINEESYNC but this process is not, please enable WINEESYNC or restart wineserver.

WINEESYNC=1 protontricks ... did the trick, but killall wineserver would probably work as well and be more reliable. Or not, I'm not exactly sure. :P

[ryanmusante]

To be sure.

kill -SIGHUP $(pgrep wineserver)

[Sirmentio]

I think the answers given here are suitable, I think, trying a newer version of winetricks could work.