When i use Wrench or Multimeter sometimes it spawns to many invs villagers that they push and i start taking damage from them and get killed.

I tested it on a stock paper server and was not able to get the villager spam to happen. What plugins do you have? Could be the problem.

Plugins (43): AdvancedAchievements, AdvancedBan, BeehivesPro, Brewery, BuycraftX, Citizens, CitizensCMD, Clans, ClearLag, CraftEnhance, CrazyAuctions, DiscordSRV, DiscordSRV-Staff-Chat, dynmap, Essentials, EssentialsGeoIP, EssentialsSpawn, GriefPrevention, Holograms, LuckPerms, Magic, mcMMO, MiningTrophies, MoarBows, MovingDevApi, MythicDrops, OldCombatMechanics, PotionCreation, RewardPRO, ServerListPlus, Shopkeepers, SpawnerSilk, TAB, Vault, VaultChatFormatter, VillagerDrops*, Votifier, VotingPlugin, Wild, WorldBorder, WorldEdit, WorldGuard, Zenchantments

p.s A bit more info for softwere
This server is running Paper version git-Paper-31 (MC: 1.15.1) (Implementing API version 1.15.1-R0.1-SNAPSHOT)

Edit: Heres a video of a proof (i modded my game after that was happeining mods:

mouse tweaks and minimap)

Edit:. heres a Proof that it kills me
https://www.dropbox.com/s/9no11ahxjwjz1wc/Badlion%20Client%202019.12.29%20-%2001.36.26.05.DVR.mp4?dl=0

What environment are you in? (Minecraft version, any other datapacks you have, any mods you may have, spigot/bukkit, realms, etc).

Minecraft Version 1.15.1
Datapacks: only Utils,mechanization and cave bioms.
No Mods Only Vanilla.
I play on hosted server and i think its on a Paper (PaperSpigot)

It's probably paper causing it then, but I'll take a look.

So recently this happened. Invisable villager became visable now and heres a video
https://www.dropbox.com/s/4v04q7mqkavehsd/Badlion%20Client%202019.12.30%20-%2021.47.03.07.DVR.mp4?dl=0