Bad parameters: BadParametersError: Parameters were incorrect. We wanted required capabilities on Selenium grid while running Appium

Question

Am new for selenium grid while launching the driver against the selenium grid port produced unreachable error:

ionixx@thangaraj:/$ **appium -a 127.0.0.1 -p 33431 -bp 2254 --udid    4100fd5a18d17000 --session-override**  [Appium] Welcome to Appium    v1.5.3 (REV 55db1892873be30aebbb9afe1adcd36a94d1a450)
[Appium]    Non-default server args: [Appium]   address: '127.0.0.1'
[Appium]      port: 33431 [Appium]   bootstrapPort: 2254 [Appium]     
sessionOverride: true [Appium]   udid: '4100fd5a18d17000' [Appium]   
Deprecated server args: [Appium]   -U,--udid =>   
--default-capabilities '{"udid":"4100fd5a18d17000"}' [Appium] Default capabilities, which will be added to each request unless overridden   
by desired capabilities: [Appium]   udid: '4100fd5a18d17000' [Appium] 
Appium REST http interface listener started on 127.0.0.1:**33431**   
[HTTP] --> POST /wd/hub/session   
{"capabilities":{"desiredCapabilities":{"app":"/home/ionixx/Android/Sdk/platform-tools/xxxxxxxxxxxx.apk","appPackage":"
cxxxxxxxxxxxxxxxx","appActivity":"xxxxxxxxxxxxxx","noReset":"true","newCommandTimeout":500000,"BROWSER_NAME":"","VERSION":"4.4.2","platformName":"Android","deviceName":"Nexas"},"requiredCapabilities":null},"desiredCapabilities":{"app":"/home/ionixx/Android/Sdk/platform-tools/xxxxxxxx.apk","appPackage":"
xxxxxxxxxxxxxxxxx","appActivity":"xxxxxxxxxx","noReset":"true","newCommandTimeout":500000,"BROWSER_NAME":"","VERSION":"4.4.2","platformName":"Android","deviceName":"Nexas"},"requiredCapabilities":null}
[debug] [MJSONWP] **Bad parameters: BadParametersError: Parameters   
were incorrect. We wanted   
{"required":["desiredCapabilities"],"optional":["requiredCapabilities","sessionId","id"]}
and you sent   
["capabilities","desiredCapabilities","requiredCapabilities"]**   
[HTTP] <-- POST /wd/hub/session 400 7 ms - 201  [HTTP] --> POST   
/wd/hub/session   
{"capabilities":{"desiredCapabilities":{"app":"/home/ionixx/Android/Sdk/platform-toolsxxxxxxxxxxxx.apk","appPackage":"
xxxxxxxxxxxxxxxx","appActivity":"xxxxxxxxxxxxxxxxxxxx","noReset":"true","newCommandTimeout":500000,"BROWSER_NAME":"","VERSION":"4.4.2","platformName":"Android","deviceName":"Nexas"},"requiredCapabilities":null}}

Answer 1

I have solved this issue by changing the application, it seems the problem came from an old an apk file I was using!