Existing install of Espo now showing blank page with Bad Server Response

[mcruickshank]

Please advise how to fix this:

Error Console shows:
[Error] Bad server response:
(anonymous function)
dispatch (espo.min.js, line 3)
handle (espo.min.js, line 3)
trigger (espo.min.js, line 3)
x (espo.min.js, line 4)
(anonymous function) (espo.min.js, line 4)

[mcruickshank]

Nevermind, I found the problem. MySQL crashed. Once I restarted it, Espo was fine.