First check the action that corresponds to the error id, if everything is ok with it then check the if conditions that are above this action and most likely there is a syntax error there. There is an old bug in bas when the id indicates an incorrect error number
@dda
How can this be repeated? If I create a new project, does this happen again?
Send a screenshot, what parameters have you specified in the "Proxy" action
Please attach the proxies with which the problem occurs in the forum's private messages
@ptt-bds
Could you provide more details please. Which sites is the problem with and what action? Perhaps you could attach a test project so I can replicate your problem?