Unable to insert geometry point using TypeScript and MassiveJS

I am trying to simply trying to validate a point before I actually insert it into the db.

I am using the following:

• TypeScript: 3.5.2
• MassiveJS: 6.4.0
• PostgreSQL: 11
• PostGIS: 2.5

        const validGeom = await db.st_isvalidreason(await db.st_point(commonWeather.reqLon.toFixed(4),commonWeather.reqLat.toFixed(4)))
        console.log(validGeom)

I am consistently getting the following error:

error: parse error - invalid geometry
    at Connection.parseE (/app/node_modules/pg/lib/connection.js:581:48)
    at Connection.parseMessage (/app/node_modules/pg/lib/connection.js:380:19)
    at Socket.<anonymous> (/app/node_modules/pg/lib/connection.js:116:22)
    at Socket.emit (events.js:223:5)
    at addChunk (_stream_readable.js:309:12)
    at readableAddChunk (_stream_readable.js:290:11)
    at Socket.Readable.push (_stream_readable.js:224:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:181:23) {
  name: 'error',
  length: 151,
  severity: 'ERROR',
  code: 'XX000',
  detail: undefined,
  hint: '"{"" <-- parse error at position 2 within geometry',
  position: '43',
  internalPosition: undefined,
  internalQuery: undefined,
  where: undefined,
  schema: undefined,
  table: undefined,
  column: undefined,
  dataType: undefined,
  constraint: undefined,
  file: 'lwgeom_pg.c',
  line: '177',
  routine: 'pg_parser_errhint'
}