Synchronizing error

[Starlotte64]

Hi, it's my first time posting here. Hope everyone is doing well and a brief thank you to the people working to help others solve their issues.

I have a 1.15.2 minecraft server with serverminer. I use Forge 31.2.36 on both the server and my client. 2 Days ago when I last logged I had about 30 mods and me and my sisters have been playing completely fine with all of those. I deleted a Bones mod because it made the server lag, and my server still worked fine after. I then umm, decided to add about 20 more mods to spice up the gameplay... and I get the pesky message 'Failed to synchronize registry data from server; closing connection.' This is the information it gives me on the serverminer console :

 

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[04-09-2020 15:04:16] UUID of player xStarlotte is 2368dc79-17ea-466d-ad79-8a0dce8bf5a4
[04-09-2020 15:04:16] Dev Mode?
[04-09-2020 15:04:16] com.mojang.authlib.GameProfile@c9e028e[id=2368dc79-17ea-466d-ad79-8a0dce8bf5a4,name=xStarlotte,properties={textures=[com.mojang.authlib.properties.Property@5f64a612]},legacy=false] (/81.106.148.75:51014) lost connection: Disconnected

 

 

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Before when I have had issues it may have said 'mismatched mod list' which I have easily been able to fix, but I really can't seem to get to the bottom of this particular one without some advice and guidance

[DaemonUmbra]

Please read the Logs section of my signature below and provide the appropriate log in the appropriate manner.