Websocket API returing "Unexpected server response: 502" on connection attempt.

I've been working on creating my first web socket API gateway. Everything was initially working. I was able to connect to the API and send and receive data within postman without issue even routing requests to my custom 'sendCommand' action. Now for some reason i'm not even able to initiate a connection to the web socket API or any new APis I create.

When i attempt to connect, postman is showing: Error: Unexpected server response: 502

While the associated error in cloudwatch is:
"errorMessage": "Error: Cannot find module 'index'\nRequire stack:\n- /var/runtime/index.mjs", "stack": [ "Runtime.ImportModuleError: Error: Cannot find module 'index'", "Require stack:", "- /var/runtime/index.mjs", " at _loadUserApp (file:///var/runtime/index.mjs:997:17)", " at async UserFunction.js.module.exports.load (file:///var/runtime/index.mjs:1032:21)", " at async start (file:///var/runtime/index.mjs:1195:23)", " at async file:///var/runtime/index.mjs:1201:1" ]

I'm not sure if this is related but the issue seems to have started shortly after I updated my lambda function for the API using the following bash script. The script successfully updates the lambda and I can see the updated change when viewing the lambda within the aws console via a browser.

#!/bin/bash
lambda_name=$1
zip_file="${lambda_name}.zip"
files="${lambda_name}.js"
chmod -R 755 ${files}
zip -r "${zip_file}" $files
aws lambda update-function-code --function-name "${lambda_name}" --zip-file "fileb://${zip_file}" --no-cli-pager

Lambda the API is pointing to: import { ApiGatewayManagementApiClient, PostToConnectionCommand, } from "@aws-sdk/client-apigatewaymanagementapi";

export const handler = async(event) => {
    console.log(event)
    
    const route = event.requestContext.routeKey
    const domain = event.requestContext.domainName;
    const stage = event.requestContext.stage;
    const connectionId = event.requestContext.connectionId;
    const callbackUrl = `https://${domain}/${stage}`;
      
    const client = new ApiGatewayManagementApiClient({endpoint: callbackUrl})

    const sendToOne = async(connectionId,body) => {
      const requestParams = {
        ConnectionId: connectionId,
        Data: body
      };

      const command = new PostToConnectionCommand(requestParams);
      
      try {
        await client.send(command);
      } catch (error) {
        console.log(error);
      }

      return {
        statusCode: 200,
      };
    }

    switch(route) {
        case '$connect':
            console.log("Connect")        
            break

        case '$disconnect':
            console.log('Disconnect')
            break

        case 'sendCommand':
            console.log('Command received', event)
            return sendToOne(connectionId, JSON.stringify(event))
            break

        case '$default':
          console.log('Unknown route', route)
          return sendToOne(connectionId, JSON.stringify(event))   
    }

    return {
        statusCode: 200
    }
};

Thanks in advance for any help!