A quick test shows that your result is consistent with ./configure not existing in the current directory. (There may be other possibilities, but this is the most likely.)

If, for example, the file existed but was not executable, you might get:

> ./blah
bash: ./blah: Permission denied
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If the file existed, was executable, but contained a command that wasn't found, you might get something like this:

> ./blah
./blah: line 1: foobar: command not found
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