Detect credential errors in numericable connector (#446)
Detect credential errors in numericable connector (#446)

Fix #445
cozy-labs/konnectors,nono/konnectors,clochix/konnectors,m4dz/konnectors,poupotte/konnectors,nono/konnectors,cozy-labs/konnectors,nicofrand/konnectors,nicofrand/konnectors,m4dz/konnectors,m4dz/konnectors,poupotte/konnectors,cozy-labs/konnectors,clochix/konnectors,nono/konnectors,nicofrand/konnectors,poupotte/konnectors,clochix/konnectors