Failed to negotiate security protocol: protocol not supported

[chriskarapapas]

Hello, i get the following output when running the crawler

2020/10/21 12:28:06 Running crawler with 5 crawler nodes and 3 liveliness nodes
2020/10/21 12:28:06 Removing state from previous runs...
2020/10/21 12:28:06 Bootstrapping crawlers...
connecting to bootstrap: failed to dial QmUd6zHcbkbcs7SMxwLs48qZVX3vpcM8errYS7xEczwRMA: all dials failed

• [/ip4/138.201.67.219/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmUd6zHcbkbcs7SMxwLs48qZVX3vpcM8errYS7xEczwRMA: all dials failed
• [/ip4/138.201.67.219/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmUd6zHcbkbcs7SMxwLs48qZVX3vpcM8errYS7xEczwRMA: all dials failed
• [/ip4/138.201.67.219/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmUd6zHcbkbcs7SMxwLs48qZVX3vpcM8errYS7xEczwRMA: all dials failed
• [/ip4/138.201.67.219/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmNSYxZAiJHeLdkBg38roksAR9So7Y5eojks1yjEcUtZ7i: all dials failed
• [/ip4/138.201.67.220/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmUd6zHcbkbcs7SMxwLs48qZVX3vpcM8errYS7xEczwRMA: all dials failed
• [/ip4/138.201.67.219/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmNSYxZAiJHeLdkBg38roksAR9So7Y5eojks1yjEcUtZ7i: all dials failed
• [/ip4/138.201.67.220/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmNSYxZAiJHeLdkBg38roksAR9So7Y5eojks1yjEcUtZ7i: all dials failed
• [/ip4/138.201.67.220/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmNSYxZAiJHeLdkBg38roksAR9So7Y5eojks1yjEcUtZ7i: all dials failed
• [/ip4/138.201.67.220/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmdnXwLrC8p1ueiq2Qya8joNvk3TVVDAut7PrikmZwubtR: all dials failed
• [/ip4/138.201.68.74/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmNSYxZAiJHeLdkBg38roksAR9So7Y5eojks1yjEcUtZ7i: all dials failed
• [/ip4/138.201.67.220/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmdnXwLrC8p1ueiq2Qya8joNvk3TVVDAut7PrikmZwubtR: all dials failed
• [/ip4/138.201.68.74/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmdnXwLrC8p1ueiq2Qya8joNvk3TVVDAut7PrikmZwubtR: all dials failed
• [/ip4/138.201.68.74/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmdnXwLrC8p1ueiq2Qya8joNvk3TVVDAut7PrikmZwubtR: all dials failed
• [/ip4/138.201.68.74/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to dial QmUEMvxS2e7iDrereVYc5SWPauXPyNwxcy9BXZrC1QTcHE: all dials failed
• [/ip4/94.130.135.167/tcp/4001] failed to negotiate security protocol: protocol not supported
  connecting to bootstrap: failed to find any peer in table
  connecting to bootstrap: failed to find any peer in table
  connecting to bootstrap: failed to find any peer in table
  connecting to bootstrap: failed to find any peer in table
  Crawler has been bootstrapped...

repeatedly..
Any idea what the problem is?