Yarn packages are out of date! Firstly, you should check Yarn version, use this command: yarn –version If the version is less than 1.21.1, Yarn needs update, use command: curl –compressed -o- -L https://yarnpkg.com/install.sh | bash and run command: yarn install If that doesn’t help, try delete directory node_modules and agan run command yarn install.
Solved error: print_req_error: I/O error, dev fd0, sector 0
You could ger error “print_req_error: I/O error, dev fd0, sector 0” when you use Ubuntu. The cause of this error – FDD, Floppy Drive. If you use a program for a virtual machine, you could delete FDD in options for your virtual machine. If you use Ubuntu in PC, you could disable FDD in BIOS…
How to restart postgres in Ubuntu?
If you have Ubuntu 16.04 use next command to restart Postgres: sudo service postgresql restart If you have Ubuntu 18.04 use next command to restart Postgres: sudo systemctl restart postgresql.service If you want to know the status of Postgres uses the next command: systemctl status postgresql.service You have to see something like this: