I did follow cardano-graphql guide and I was running my node smoothly for 2 months today It gave me this error and couldn't understand what is wrong with it. I restarted the container but didn't solve my problem.
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
59bdf858b940 inputoutput/cardano-graphql-hasura:6.2.0 "docker-entrypoint..." 2 months ago Up 2 months 0.0.0.0:8090->8080/tcp cardano-graphql-hasura-1
2c4608f0384f postgres:11.5-alpine "docker-entrypoint..." 2 months ago Up 2 months 0.0.0.0:5432->5432/tcp cardano-graphql-postgres-1
2d17673d47ba inputoutput/cardano-db-sync:12.0.0 "/nix/store/5ghw8r..." 2 months ago Up 2 months cardano-graphql-cardano-db-sync-extended-1
2f8ed0c5755a inputoutput/cardano-graphql:6.2.0-mainnet "node index.js" 2 months ago Up 8 weeks 0.0.0.0:3100->3100/tcp cardano-graphql-cardano-graphql-1
d26dcadce926 cardanosolutions/cardano-node-ogmios:v5.1.0-mainnet "/root/cardano-nod..." 2 months ago Up About an hour (healthy) 3000/tcp, 12788/tcp, 0.0.0.0:1337->1337/tcp, 12798/tcp cardano-graphql-cardano-node-ogmios-1