GetDownloadLink not working. No option to get the share link. about megaapiclient

[fawad0dev]

any thing for that problem
i am using in unity as a nuget

await client.DownloadFileAsync(fileNode, downloadPath); //this is working
await client.GetDownloadLinkAsync(fileNode); //this is giving following error

ApiException: API response: AccessDenied
CG.Web.MegaApiClient.MegaApiClient.RequestCore[TResponse] (CG.Web.MegaApiClient.Serialization.RequestBase request, System.Byte[] key) (at <f7f948850b5c40809d4e684707ecfb10>:0)
CG.Web.MegaApiClient.MegaApiClient.Request[TResponse] (CG.Web.MegaApiClient.Serialization.RequestBase request, System.Byte[] key) (at <f7f948850b5c40809d4e684707ecfb10>:0)
CG.Web.MegaApiClient.MegaApiClient.GetDownloadLink (CG.Web.MegaApiClient.INode node) (at <f7f948850b5c40809d4e684707ecfb10>:0)
CG.Web.MegaApiClient.MegaApiClient+<>c__DisplayClass77_0.<GetDownloadLinkAsync>b__0 () (at <f7f948850b5c40809d4e684707ecfb10>:0)
System.Threading.Tasks.Task`1[TResult].InnerInvoke () (at <51fded79cd284d4d911c5949aff4cb21>:0)
System.Threading.Tasks.Task.Execute () (at <51fded79cd284d4d911c5949aff4cb21>:0)
--- End of stack trace from previous location where exception was thrown ---
MegaStreamVideoPlayer.Start () (at Assets/Red Pool/Mega VideoPlayer/MegaStreamVideoPlayer.cs:30)
System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__7_0 (System.Object state) (at <51fded79cd284d4d911c5949aff4cb21>:0)
UnityEngine.UnitySynchronizationContext+WorkRequest.Invoke () (at <f1e29a71158e46cdb750140a667aea01>:0)
UnityEngine.UnitySynchronizationContext.Exec () (at <f1e29a71158e46cdb750140a667aea01>:0)
UnityEngine.UnitySynchronizationContext.ExecuteTasks () (at <f1e29a71158e46cdb750140a667aea01>:0)