zotero 5 cannot upgrade database

I installed zotero 5. At firs run, try to update database but gets the following error message:
How can I solve?
Thank you


Database upgrade error

Error: Error(s) encountered during statement execution: database disk image is malformed [QUERY: INSERT OR IGNORE INTO fulltextItemWords SELECT * FROM fulltextItemWordsOld] [PARAMS: ] [ERROR: database disk image is malformed]
Zotero.DBConnection.prototype.queryAsync<@chrome://zotero/content/xpcom/db.js:703:10
tryCatcher@resource://gre/modules/commonjs/toolkit/loader.js -> resource://zotero/bluebird/util.js:16:16
module.exports/PromiseSpawn.prototype._promiseRejected@resource://gre/modules/commonjs/toolkit/loader.js -> resource://zotero/bluebird/generators.js:106:18
module.exports/Promise.prototype._settlePromise@resource://gre/modules/commonjs/toolkit/loader.js -> resource://zotero/bluebird/promise.js:576:17
module.exports/Promise.prototype._settlePromise0@resource://gre/modules/commonjs/toolkit/loader.js -> resource://zotero/bluebird/promise.js:614:5
module.exports/Promise.prototype._settlePromises@resource://gre/modules/commonjs/toolkit/loader.js -> resource://zotero/bluebird/promise.js:689:13
From previous event:
captureStackTrace@resource://gre/modules/commonjs/toolkit/loader.js -> resource://zotero/bluebird/debuggability.js:826:23
CapturedTrace@resource://gre/modules/commonjs/toolkit/loader.js -> resource://zotero/bluebird/debuggability.js:718:5
longStackTracesCaptureStackTrace@resource://gre/modules/commonjs/toolkit/loader.js -> resource://zotero/bluebird/debuggability.js:397:19
module.exports/Promise.prototype._then@resource://gre/modules/commonjs/toolkit/loader.js -> resource://zotero/bluebird/promise.js:232:9
module.exports/Promise.prototype.then@resource://gre/modules/commonjs/toolkit/loader.js -> resource://zotero/bluebird/promise.js:125:12
TaskImpl_handleResultValue@resource://gre/modules/Task.jsm:396:7
TaskImpl_run@resource://gre/modules/Task.jsm:327:15
TaskImpl@resource://gre/modules/Task.jsm:277:3
createAsyncFunction/asyncFunction@resource://gre/modules/Task.jsm:252:14
Task_spawn@resource://gre/modules/Task.jsm:166:12
ConnectionData.prototype<.executeTransaction/promise</transactionPromise<@resource://gre/modules/Sqlite.jsm:593:28
TaskImpl_run@resource://gre/modules/Task.jsm:319:42
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