Unfortunately there is no magical list of common errors and fixes.
The reason for this is because there are new errors daily, as errors shown in the browser/logs can come from anything, network, db, db driver, java, browser.
However, we do have a short list of common errors in our forum:
You'll just need to cut and paste those in your browser if you wish to read the details.
With most errors, there could be a number of causes, so almost every case requires some level of trouble-shooting to narrow down the cause.
I hope this all help but if you find you need additional assistance, please let us know.