Laravel: (Job dispatch) Failed to open stream: Permission denied

fopen(app/storage/framework/cache/data/6a/e8/6ae8f7a027ae2ffc516a3933fcade51ab014d34d): Failed to open stream: Permission denied

Stack trace

app/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php:256
app/vendor/laravel/framework/src/Illuminate/Filesystem/LockableFile.php:69
app/vendor/laravel/framework/src/Illuminate/Filesystem/LockableFile.php:42
app/vendor/laravel/framework/src/Illuminate/Cache/FileStore.php:108
app/vendor/laravel/framework/src/Illuminate/Cache/FileLock.php:14
app/vendor/laravel/framework/src/Illuminate/Cache/Lock.php:91
app/vendor/laravel/framework/src/Illuminate/Bus/UniqueLock.php:43
app/vendor/laravel/framework/src/Illuminate/Foundation/Bus/PendingDispatch.php:164
app/vendor/laravel/framework/src/Illuminate/Foundation/Bus/PendingDispatch.php:188
app/vendor/ssntpl/cloud-storage/src/CloudStorageAdapter.php:65
app/vendor/ssntpl/cloud-storage/src/CloudStorageAdapter.php:151

I am dispatching job app/vendor/ssntpl/cloud-storage/src/CloudStorageAdapter.php:65 job

SyncFileJob::dispatch($path, $fromDisk, $remoteDisk)->onConnection($this->connection)->onQueue($this->queue);

then sometimes that line throw above error(Failed to open stream: Permission denied) whereas sometimes it working fine.

can anyone explain me, why is it happened? what will be the solution for it?

If there was a permission issue then not a single job would be run. queue connection is sync

I think in your case laravel is using the file cache driver, which stores cached data in the storage/framework/cache/data directory. if it's possible switch from file to redis or database in config/cache.php

however you can fix this with running this command for directory permission

chmod -R 775 storage

and then run

chown -R www-data:www-data storage //replace www-data with your web server's user.

Clear cache and restart queue workers and try again

php artisan cache:clear

php artisan queue:restart