Did you save your work to a custom esp file ? If not then you just didnt save your work

When loading it just choose the custom esp as Active plugin and nothing else.
I did I get an Warning:
MASTERFILE: Unable to find quest (02000D62) on Topic
"GSQ01NormMeetingBranchTopic".
,
MASTERFILE: Unable to find quest (02000D62) on Topic
"GSQ01NormMeetingBranchTopic" (02000D63).
,
QUESTS: Missing quest 02000D62 in dialogue view GSQ01NormView
(02000D62)
,
MASTERFILE: NavmeshInfo 00028e37 has no parent space, ignoring
,
I got more errors but this was due to the fact that I only loaded up the plugin.
And when I looked for any of the data I made quest related and such, none of it is there.