hi, we are upgrading from 1.4.0 to latest (1.8.0) and we are getting this error - we are self hosting:

+ growthbook-ccdb99d44-kdcm5 › growthbook
growthbook-ccdb99d44-kdcm5 growthbook yarn run v1.22.19
growthbook-ccdb99d44-kdcm5 growthbook $ wsrun -p '*-end' -m start
growthbook-ccdb99d44-kdcm5 growthbook back-end
growthbook-ccdb99d44-kdcm5 growthbook  | $ node dist/server.js
growthbook-ccdb99d44-kdcm5 growthbook front-end
growthbook-ccdb99d44-kdcm5 growthbook  | $ next start
growthbook-ccdb99d44-p8tkb growthbook yarn run v1.22.19
growthbook-ccdb99d44-p8tkb growthbook $ wsrun -p '*-end' -m start
growthbook-ccdb99d44-kdcm5 growthbook  | ready - started server on 0.0.0.0:3000, url: <http://localhost:3000>
growthbook-ccdb99d44-kdcm5 growthbook back-end
growthbook-ccdb99d44-kdcm5 growthbook  | {"level":30,"time":1668616791387,"pid":58,"hostname":"growthbook-ccdb99d44-kdcm5","msg":"Back-end is running at <http://localhost:3100> in production mode. Press CTRL-C to stop"}
growthbook-ccdb99d44-kdcm5 growthbook  | /usr/local/src/app/packages/back-end/dist/services/auth/index.js:30
growthbook-ccdb99d44-kdcm5 growthbook  |             throw new Error("Id token does not contain email address");
growthbook-ccdb99d44-kdcm5 growthbook  |                   ^
growthbook-ccdb99d44-kdcm5 growthbook  | 
growthbook-ccdb99d44-kdcm5 growthbook  | Error: Id token does not contain email address
growthbook-ccdb99d44-kdcm5 growthbook  |     at /usr/local/src/app/packages/back-end/dist/services/auth/index.js:30:19
growthbook-ccdb99d44-kdcm5 growthbook  |     at Generator.next (<anonymous>)
growthbook-ccdb99d44-kdcm5 growthbook  |     at /usr/local/src/app/packages/back-end/dist/services/auth/index.js:8:71
growthbook-ccdb99d44-kdcm5 growthbook  |     at new Promise (<anonymous>)
growthbook-ccdb99d44-kdcm5 growthbook  |     at __awaiter (/usr/local/src/app/packages/back-end/dist/services/auth/index.js:4:12)
growthbook-ccdb99d44-kdcm5 growthbook  |     at getUserFromJWT (/usr/local/src/app/packages/back-end/dist/services/auth/index.js:28:12)
growthbook-ccdb99d44-kdcm5 growthbook  |     at /usr/local/src/app/packages/back-end/dist/services/auth/index.js:86:28
growthbook-ccdb99d44-kdcm5 growthbook  |     at Generator.next (<anonymous>)
growthbook-ccdb99d44-kdcm5 growthbook  |     at /usr/local/src/app/packages/back-end/dist/services/auth/index.js:8:71
growthbook-ccdb99d44-kdcm5 growthbook  |     at new Promise (<anonymous>)
growthbook-ccdb99d44-kdcm5 growthbook  |     at __awaiter (/usr/local/src/app/packages/back-end/dist/services/auth/index.js:4:12)
growthbook-ccdb99d44-kdcm5 growthbook  |     at processJWT (/usr/local/src/app/packages/back-end/dist/services/auth/index.js:49:12)
growthbook-ccdb99d44-kdcm5 growthbook  |     at Layer.handle [as handle_request] (/usr/local/src/app/node_modules/express/lib/router/layer.js:95:5)
growthbook-ccdb99d44-kdcm5 growthbook  |     at trim_prefix (/usr/local/src/app/node_modules/express/lib/router/index.js:328:13)
growthbook-ccdb99d44-kdcm5 growthbook  |     at /usr/local/src/app/node_modules/express/lib/router/index.js:286:9
growthbook-ccdb99d44-kdcm5 growthbook  |     at Function.process_params (/usr/local/src/app/node_modules/express/lib/router/index.js:346:12)
growthbook-ccdb99d44-kdcm5 growthbook  |     at next (/usr/local/src/app/node_modules/express/lib/router/index.js:280:10)
growthbook-ccdb99d44-kdcm5 growthbook  |     at /usr/local/src/app/node_modules/express-jwt/lib/index.js:131:7
growthbook-ccdb99d44-kdcm5 growthbook  |     at wrapper (/usr/local/src/app/node_modules/async/dist/async.js:271:20)
growthbook-ccdb99d44-kdcm5 growthbook  |     at next (/usr/local/src/app/node_modules/async/dist/async.js:5795:24)
growthbook-ccdb99d44-kdcm5 growthbook  |     at /usr/local/src/app/node_modules/async/dist/async.js:327:20
growthbook-ccdb99d44-kdcm5 growthbook  |     at /usr/local/src/app/node_modules/express-jwt/lib/index.js:119:13
growthbook-ccdb99d44-kdcm5 growthbook  | error Command failed with exit code 1.
growthbook-ccdb99d44-kdcm5 growthbook  | info Visit <https://yarnpkg.com/en/docs/cli/run> for documentation about this comm

when upgrading do we need to run any db migrations, are there any guides about this, thanks!

That looks like an authentication error. You might need to clear your cookies and login again. It's strange that it looks like it's a fatal error and stopping the entire back-end from running. It should just be a runtime warning