unable to send your friend request right now

Main Menu > Options > Online

When clicking either “friend list” or “allow requests” button, the following error:

unable to send your friend request right now

This error is very vague and confusing.

This was working fine in snapshot 7 for me.

from the log file :

[15:49:36] [Datafixer Bootstrap #0/INFO]: 295 Datafixer optimizations took 15232 milliseconds
[15:49:47] [Render thread/INFO]: Environment: Environment[sessionHost=https://sessionserver.mojang.com, servicesHost=https://api.minecraftservices.com, profilesHost=https://api.mojang.com, name=PROD]
[15:49:48] [Render thread/INFO]: Setting user: *******REMOVED FOR PRIVACY*******
[15:49:50] [Render thread/INFO]: Backend library: LWJGL version 3.4.1+2
[15:49:50] [Download-2/ERROR]: Failed to fetch user properties
com.mojang.authlib.exceptions.InvalidCredentialsException: Status: 401
	at com.mojang.authlib.exceptions.MinecraftClientHttpException.toAuthenticationException(MinecraftClientHttpException.java:59)
	at com.mojang.authlib.yggdrasil.YggdrasilUserApiService.fetchProperties(YggdrasilUserApiService.java:173)
	at net.minecraft.client.Minecraft.lambda$new$1(Minecraft.java:435)
	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1789)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1090)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:614)
	at java.base/java.lang.Thread.run(Thread.java:1474)
Caused by: MinecraftClientHttpException[type=HTTP_ERROR, status=401, response=ErrorResponse[path=/player/attributes, error=null, errorMessage=null, details=null]]
	at com.mojang.authlib.minecraft.client.MinecraftClient.buildHttpException(MinecraftClient.java:239)
	at com.mojang.authlib.minecraft.client.MinecraftClient.readInputStream(MinecraftClient.java:173)
	at com.mojang.authlib.minecraft.client.MinecraftClient.get(MinecraftClient.java:66)
	at com.mojang.authlib.yggdrasil.YggdrasilUserApiService.fetchProperties(YggdrasilUserApiService.java:123)
	... 5 more
[15:49:52] [Render thread/INFO]: Using graphics backend OpenGL, using drivers: 3.3.0 NVIDIA 582.28
[15:49:52] [Render thread/INFO]: Using graphics device: NVIDIA GeForce GT 1030/PCIe/SSE2 (NVIDIA Corporation)
[15:49:52] [Render thread/INFO]: Using graphics device extensions: GL_ARB_multi_draw_indirect, GL_ARB_buffer_storage, GL_ARB_shader_draw_parameters, GL_ARB_base_instance, GL_KHR_debug, GL_ARB_draw_indirect, GL_ARB_clip_control, GL_ARB_vertex_attrib_binding, GL_ARB_direct_state_access, GL_EXT_texture_filter_anisotropic
[15:49:53] [Render thread/WARN]: Missing metadata in pack file/Simple 8x8 Texturepack.zip
[15:49:54] [Download-2/INFO]: Could not authorize you against Realms server: javax.ws.rs.NotAuthorizedException: HTTP 401 Unauthorized
[15:49:54] [Download-2/ERROR]: Failed to fetch Realms feature flags
com.mojang.realmsclient.exception.RealmsServiceException: Realms authentication error with message 'javax.ws.rs.NotAuthorizedException: HTTP 401 Unauthorized'
	at com.mojang.realmsclient.client.RealmsClient.execute(RealmsClient.java:528)
	at com.mojang.realmsclient.client.RealmsClient.fetchFeatureFlags(RealmsClient.java:187)
	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1789)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1090)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:614)
	at java.base/java.lang.Thread.run(Thread.java:1474)