Disclaimer: I don't take any responsibility if your save corrupted. So please use be caution.

1. Download notepad++[notepad-plus-plus.org]/atom[atom.io]
2. Open home directory of DST (Default: C:\Program Files (x86)\Steam\steamapps\common\Don't Starve Together)
https://i.imgur.com/nGyr1XS.png
3. Open mods folder and look for workshop-912647660 (Have to subscribe to download the mod from steam workshop before start)
4. Use notepad++ / atom to open modmain.lua
5. Use Ctrl+F to search "AddPlayerPostInit" function and add two line after which is
https://imgur.com/Bx8eYuA
6. Open scripts\prefabs\miamirick.lua
7. Use Ctrl+F to search "inst:AddTag("handyperson")"
8. Add -- before inst:AddTag("handyperson") and inst:AddTag("fastbuilder") (It means comment and the compiler won't execute it to prevent other bugs)
https://imgur.com/NPwwz94.png
9. Done! Open the game and enable the mod to check the result! (Remember to backup the save which should exist in Documents\Klei)

Lazy method: Download [mega.nz] the edited version and unpack to overwrite the exist file
*** Steam community not allow us to post mega link for downloading
Mega file link: #!0V42XKiR
Decryption key: 1rMMZnF6-FtWnBpxxaJdWzCsaQlWEECIdurGhzdrFNo


P.S. I am not an expert of modding in DST. I don't have any idea on what causing this bug just believe there may be some problems on calling function in miamirick.lua if cave server enabled. Hope the author can fix this bug later.

Last update on this discussion: 16th March 2020 (If the mod has been updated to fix the mod please tell me and pin the reply!)