Training stuck at "Optimizing Hyperparameters" for 1-2 hours, then "Training Failed"

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After I start training (free account, still 3 free tokens left) it does some stuff then gets to “Optimizing Hyperparameters…”, where it gets stuck for a hour or two, then this appears:

Are the roboflow servers down or what?

• Project Type: Object detection
• Operating System & Browser: Windows & Google Chrome
• Project Universe Link or Workspace/Project ID: brawl-stars-character-circles

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This is the error that appears afer training fails in a hour or two:

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This is the devtools

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Training the default hard-hat-sample-flu1v/1 seems to work fine, but making my own model with only pre proccesing to decrease resolution and 93 images (of which 68 for training) still fails