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sqlite3 happen 'unable to open database file' error sometimes

See original GitHub issue

error log

{ [SequelizeDatabaseError: SQLITE_CANTOPEN: unable to open database file]
  name: 'SequelizeDatabaseError',
  message: 'SQLITE_CANTOPEN: unable to open database file',
  parent: 
   { [Error: SQLITE_CANTOPEN: unable to open database file]
     errno: 14,
     code: 'SQLITE_CANTOPEN',
     sql: 'SELECT `id`, `name`, `owner`, `templateConfig`, `des`, `time`, `status`, `createdAt`, `updatedAt` FROM `Pages` AS `Page` ORDER BY time DESC LIMIT 20;' },
  original: 
   { [Error: SQLITE_CANTOPEN: unable to open database file]
     errno: 14,
     code: 'SQLITE_CANTOPEN',
     sql: 'SELECT `id`, `name`, `owner`, `templateConfig`, `des`, `time`, `status`, `createdAt`, `updatedAt` FROM `Pages` AS `Page` ORDER BY time DESC LIMIT 20;' },
  sql: 'SELECT `id`, `name`, `owner`, `templateConfig`, `des`, `time`, `status`, `createdAt`, `updatedAt` FROM `Pages` AS `Page` ORDER BY time DESC LIMIT 20;' }
SequelizeDatabaseError: SQLITE_CANTOPEN: unable to open database file
    at module.exports.Query.formatError (/root/fed/quick/trunk/node_modules/sequelize/lib/dialects/sqlite/query.js:245:16)
    at Statement.<anonymous> (/root/fed/quick/trunk/node_modules/sequelize/lib/dialects/sqlite/query.js:53:31)
    at Statement.replacement (/root/fed/quick/trunk/node_modules/sqlite3/lib/trace.js:20:31)
    at Statement.replacement (/root/fed/quick/trunk/node_modules/sqlite3/lib/trace.js:20:31)

this is happend sometimes,i can not find why?