Hoping some can please assist with the following express server error as unsure what to look for and why this type of error keeps on appearing. It is using a postgres db backend. It seems to also crash the server.

error: invalid input syntax for type integer: ""
    at Parser.parseErrorMessage (/home/app/server/node_modules/pg-protocol/dist/parser.js:278:15)
    at Parser.handlePacket (/home/app/server/node_modules/pg-protocol/dist/parser.js:126:29)
    at Parser.parse (/home/app/server/node_modules/pg-protocol/dist/parser.js:39:38)
    at Socket.<anonymous> (/home/app/server/node_modules/pg-protocol/dist/index.js:10:42)
    at Socket.emit (events.js:375:28)
    at addChunk (internal/streams/readable.js:290:12)
    at readableAddChunk (internal/streams/readable.js:265:9)
    at Socket.Readable.push (internal/streams/readable.js:204:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:188:23) {
  length: 101,
  severity: 'ERROR',
  code: '22P02',
  detail: undefined,
  hint: undefined,
  position: undefined,
  internalPosition: undefined,
  internalQuery: undefined,
  where: undefined,
  schema: undefined,
  table: undefined,
  column: undefined,
  dataType: undefined,
  constraint: undefined,
  file: 'numutils.c',
  line: '323',
  routine: 'pg_strtoint32'
}

Is there something specific I need to look for based on this error: invalid input syntax for type integer ?

UPDATED - based on below comment, could the following insert query possibly cause this error?

const insertLogQuery = `
insert into log (log_id, run_id, s_id, q_id, message)
     values ($1, $2, $3, $4, $5)          
`;
const insertLog = await pool.query(insertLogQuery, [ id, null, null, null, reason ]);

where the columns: run_id, s_id and q_id are defined as integers.

If so, can someone pls let me know what the best approach is to prevent this error based on this code.