Unsupported operation: No source of cryptographically secure random numbers available.

[zhang75656]

OS: MacOS (Darwin Kernel Version 24.4.0, RELEASE_ARM64_T8132)
flutter version: 3.29.3

Run:
export PUB_HOSTED_URL=https://mirrors.tuna.tsinghua.edu.cn/dart-pub
export FLUTTER_STORAGE_BASE_URL=https://mirrors.tuna.tsinghua.edu.cn/flutter
export DART_VM_OPTIONS=--root-certs-file=/Users/builder/tuna.tsinghua.edu.cn.der
flutter pub get

Error:
Resolving dependencies... (8.9s)
Unsupported operation: No source of cryptographically secure random numbers available.
dart:math new Random.secure
package:pub/src/utils.dart 111:28 random
package:pub/src/utils.dart random
package:pub/src/utils.dart 758:39 retry
===== asynchronous gap ===========================
package:pub/src/http.dart 365:10 retryForHttp
===== asynchronous gap ===========================
package:pub/src/source/hosted.dart 501:16 HostedSource._fetchVersionsNoPrefetching.
===== asynchronous gap ===========================
package:pub/src/authentication/client.dart 127:12 withAuthenticatedClient
===== asynchronous gap ===========================
package:pub/src/source/hosted.dart 499:18 HostedSource._fetchVersionsNoPrefetching
===== asynchronous gap ===========================
package:pub/src/source/hosted.dart 571:20 HostedSource._fetchVersions
===== asynchronous gap ===========================
package:pub/src/rate_limited_scheduler.dart 86:11 RateLimitedScheduler._processNextTask.runJob
===== asynchronous gap ===========================
package:pub/src/rate_limited_scheduler.dart 96:7 RateLimitedScheduler._processNextTask
===== asynchronous gap ===========================
package:pool/pool.dart 127:14 Pool.withResource
This is an unexpected error. The full log and other details are collected in:

/Users/builder/.pub-cache/log/pub_log.txt

Consider creating an issue on https://github.com/dart-lang/pub/issues/new
and attaching the relevant parts of that log file.
FileSystemException: Cannot open file, path = 'pubspec.yaml' (OS Error: Too many open files, errno = 24)
#0 _File.throwIfError (dart:io/file_impl.dart:782:7)
#1 _File.openSync (dart:io/file_impl.dart:575:5)
#2 _File.readAsBytesSync (dart:io/file_impl.dart:663:18)
#3 _File.readAsStringSync (dart:io/file_impl.dart:718:18)
#4 readTextFile (package:pub/src/io.dart:205:48)
#5 dumpTranscriptToFile (package:pub/src/log.dart:383:11)
#6 PubCommand.run (package:pub/src/command.dart:239:13)

#7 CommandRunner.runCommand (package:args/command_runner.dart:212:13)

#8 DartdevRunner.runCommand (package:dartdev/dartdev.dart:240:18)

#9 runDartdev (package:dartdev/dartdev.dart:47:16)

#10 main (file:///Volumes/Work/s/w/ir/x/w/sdk/pkg/dartdev/bin/dartdev.dart:13:5)

Failed to update packages.

================================
try run: flutter pub get -v
Error:
........
FINE: Failed writing cache file. FileSystemException: Cannot open file, path = '/Users/builder/.pub-cache/hosted/mirrors.tuna.tsinghua.edu.cn%47dart-pub%47/.cache/pub_semver-versions.json' (OS Error: Too many open files, errno = 24)
IO : Attempt #2 for fetching versions for "watcher" from "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/api/packages/watcher"
SLVR: Version solving took 0:00:11.553566 seconds.
| Tried 1 solutions.
FINE: Resolving dependencies finished (11.593s).
ERR : Unsupported operation: No source of cryptographically secure random numbers available.
FINE: Exception type: UnsupportedError
ERR : dart:math new Random.secure
| package:pub/src/utils.dart 111:28 random
| package:pub/src/utils.dart random
| package:pub/src/utils.dart 758:39 retry
| ===== asynchronous gap ===========================
| dart:async Future.catchError
| package:pub/src/utils.dart 140:10 captureErrors.wrappedCallback
| package:stack_trace Chain.capture
| package:pub/src/utils.dart 155:11 captureErrors
| package:pub/src/command.dart 196:13 PubCommand.run
| package:args/command_runner.dart 212:27 CommandRunner.runCommand
| package:dartdev/dartdev.dart 240:30 DartdevRunner.runCommand
| package:args/command_runner.dart 122:25 CommandRunner.run.
| dart:async new Future.sync
| package:args/command_runner.dart 122:14 CommandRunner.run
| package:dartdev/dartdev.dart 47:29 runDartdev
| /Volumes/Work/s/w/ir/x/w/sdk/pkg/dartdev/bin/dartdev.dart 13:11 main
---- End log transcript ----
FileSystemException: Cannot open file, path = 'pubspec.yaml' (OS Error: Too many open files, errno = 24)
#0 _File.throwIfError (dart:io/file_impl.dart:782:7)
#1 _File.openSync (dart:io/file_impl.dart:575:5)
#2 _File.readAsBytesSync (dart:io/file_impl.dart:663:18)
#3 _File.readAsStringSync (dart:io/file_impl.dart:718:18)
#4 readTextFile (package:pub/src/io.dart:205:48)
#5 dumpTranscriptToFile (package:pub/src/log.dart:383:11)
#6 PubCommand.run (package:pub/src/command.dart:239:13)

#7 CommandRunner.runCommand (package:args/command_runner.dart:212:13)

#8 DartdevRunner.runCommand (package:dartdev/dartdev.dart:240:18)

#9 runDartdev (package:dartdev/dartdev.dart:47:16)

#10 main (file:///Volumes/Work/s/w/ir/x/w/sdk/pkg/dartdev/bin/dartdev.dart:13:5)

[+11917 ms] pub failed
command: "/Users/builder/development/flutter3.29.3/bin/cache/dart-sdk/bin/dart pub --suppress-analytics get -v --example --directory ."
pub env: {
"FLUTTER_ROOT": "/Users/builder/development/flutter3.29.3",
"PUB_ENVIRONMENT": "flutter_cli:get",
}
exit code: 1

[ +9 ms] "flutter get" took 12,023ms.
[ +6 ms] Failed to update packages.
[ ]
#0 throwToolExit (package:flutter_tools/src/base/common.dart:34:3)
#1 _DefaultPub._runWithStdioInherited (package:flutter_tools/src/dart/pub.dart:531:7)

#2 _DefaultPub.interactively (package:flutter_tools/src/dart/pub.dart:610:5)

#3 PackagesGetCommand.runCommand (package:flutter_tools/src/commands/packages.dart:343:7)

#4 FlutterCommand.run. (package:flutter_tools/src/runner/flutter_command.dart:1558:27)

#5 AppContext.run. (package:flutter_tools/src/base/context.dart:154:19)

#6 CommandRunner.runCommand (package:args/command_runner.dart:212:13)

#7 FlutterCommandRunner.runCommand. (package:flutter_tools/src/runner/flutter_command_runner.dart:496:9)

#8 AppContext.run. (package:flutter_tools/src/base/context.dart:154:19)

#9 FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:431:5)

#10 run.. (package:flutter_tools/runner.dart:98:11)

#11 AppContext.run. (package:flutter_tools/src/base/context.dart:154:19)

#12 main (package:flutter_tools/executable.dart:99:3)

[ ] Running 1 shutdown hook
[ ] Shutdown hooks complete
[ +270 ms] exiting with code 1

May I ask how I can fix this problem?